Left- and right-hand traffic
Left-hand traffic (LHT) and right-hand traffic (RHT) are the practices, in bidirectional traffic, of keeping to the left side or to the right side of the road, respectively. They are fundamental to traffic flow, and are sometimes referred to as the rule of the road. The terms right and left hand drive refers to the position of the driver in the vehicle and are the reverse of the terms right and left hand traffic.
RHT is used in 165 countries and territories, with the remaining 75 countries and territories using LHT. Countries that use LHT account for about a sixth of the world's land area, with about a third of its population and a quarter of its roads. In 1919, 104 of the world's territories were LHT and an equal number were RHT. Between 1919 and 1986, 34 of the LHT territories switched to RHT.
Many of the countries that adopted LHT were formerly part of the British Empire, although some, such as Indonesia, Japan, Macau, Nepal, Suriname, Sweden (now RHT), and Thailand, to name a few, were not. Similarly, many of the countries that were a part of the French colonial empire adopted RHT.
In LHT traffic keeps left, and cars usually have the steering wheel on the right (RHD – right hand drive), putting the driver on the side closer to the centre of the road. Roundabouts circulate clockwise. RHT is the opposite of this: traffic keeps right, the driver usually sits on the left side of the car (LHD - left hand drive), and roundabouts circulate anticlockwise.
In most countries rail traffic follows the handedness of the roads, although many of the countries that switched road traffic from LHT to RHT did not switch their trains. Boat traffic on rivers is effectively RHT. Boats are traditionally piloted from the starboard side to facilitate priority to the right.
Historically, many places kept left, while many others kept right, often within the same country. There are many myths that attempt to explain why one or the other is preferred. About 90 percent of people are right-handed, and many explanations reference this. Horses are traditionally mounted from the left, and led from the left, with the reins in the right hand. So people walking horses might use RHT, to keep the animals separated. Also referenced is the need for pedestrians to keep their swords in the right hand and pass on the left as in LHT, for self-defence. It has been suggested that wagon-drivers whipped their horses with their right hand, and thus sat on the left hand side of the wagon, as in RHT. It has been written that in the year 1300, Pope Boniface VIII directed pilgrims to keep left; however, it has also been written that he directed them to keep to the right, and there is no documented evidence to back either claim.
One of the first references in England to requiring traffic direction was an order by the London Court of Aldermen in 1669, requiring a man to be posted on London Bridge to ensure that "all cartes going to keep on the one side and all cartes coming to keep on the other side". It later was legislated as the London Bridge Act 1765 (29 Geo. II c. 40), which required that "all carriages passing over the said bridge from London shall go on the east side thereof" – those going south to remain on the east, ie the left-hand side by direction of travel. This may represent the first statutory requirement for LHT.
A frequently-heard story is that Napoleon changed the custom from LHT to RHT in France and the countries he conquered after the French Revolution. Scholars who have looked for documentary evidence of this story have found none, and it should be assumed untrue unless contemporary sources surface. In 1827, long after Napoleon's reign, Edward Planta wrote that, in Paris, "The coachmen have no established rule by which they drive on the right or left of the road, but they cross and jostle one another without ceremony."
Rotterdam was LHT until 1917, although the rest of the Netherlands was RHT.
Russia completely switched to RHT in the last days of the Tsars in February 1917.
After the Austro-Hungarian Empire broke up, the resulting countries gradually changed to RHT. In Austria, Vorarlberg switched in 1921, North Tyrol in 1930, Carinthia and East Tyrol in 1935, and the rest of the country in 1938. In Romania, Transylvania, the Banat and Bukovina were LHT until 1919, while Wallachia and Moldavia were already RHT. Partitions of Poland belonging to the German Empire and the Russian Empire were RHT, while the former Austrian Partition changed in the 1920s. Croatia-Slavonia switched on joining the Kingdom of Yugoslavia in 1918, although Istria and Dalmatia were already RHT. The switch in Czechoslovakia from LHT to RHT had been planned for 1939, and was accelerated by the start of the German occupation of Czechoslovakia that year. West Ukraine was LHT, but the rest of Ukraine, having been part of the Russian Empire, was RHT.
In Italy it had been decreed in 1901 that each province define its own traffic code, including the handedness of traffic, and the 1903 Baedeker guide reported that the rule of the road varied by region. For example, in Northern Italy, the provinces of Brescia, Como, Vicenza, and Ravenna were RHT while nearby provinces of Lecco, Verona, and Varese were LHT, as were the cities Milan, Turin, and Florence. In 1915, allied forces of World War I imposed LHT in areas of military operation, but this was revoked in 1918. Rome was reported by Goethe as LHT in the 1780s. Naples was also LHT although surrounding areas were often RHT. In cities LHT was considered safer since pedestrians, accustomed to keeping right, could better see oncoming vehicular traffic. Finally, in 1923 Italian Duce Benito Mussolini decreed that all LHT areas would gradually transition to RHT. In spite of this, some Italian heavy commercial vehicles were right-hand drive until the traffic code was changed in 1959.
Sweden switched to RHT in 1967, having been LHT from about 1734 despite having land borders with RHT countries, and approximately 90% of cars being left-hand drive (LHD). A referendum in 1955 overwhelmingly rejected a change to RHT, but a few years later the government ordered it, and it occurred on Sunday, 3 September 1967 at 5 am. The accident rate then dropped sharply, but soon rose to near its original level. The day was known as Högertrafikomläggningen, or Dagen H for short.
The United Kingdom is LHT, but two of its overseas territories, Gibraltar and the British Indian Ocean Territory, are RHT. In the late 1960s, the British Department for Transport considered switching to RHT, but declared it unsafe and too costly for such a built-up nation. Road building standards, for motorways in particular, allow asymmetrically designed road junctions, where merge and diverge lanes differ in length.
Today, four countries in Europe continue to use LHT; they are all island nations: the United Kingdom, Republic of Ireland (formerly part of the United Kingdom) and Cyprus and Malta (both former British colonies).
LHT was introduced in British West Africa. All of the countries formerly part of this colony border with former French RHT jurisdictions and have switched to RHT since decolonization. These include Ghana, Gambia, Sierra Leone, and Nigeria. Britain introduced LHT to the East Africa Protectorate (now Kenya, Tanzania and Uganda), Rhodesia, and the Cape Colony (now Zambia, Zimbabwe and South Africa). All of these have remained LHT. Sudan, formerly part of Anglo-Egyptian Sudan switched to RHT in 1973, as most of its neighbours were RHT countries, with the exception of Uganda and Kenya, but since the independence of South Sudan in 2011, all of its neighbours drive on the right. Despite it sharing land borders with two LHT countries, South Sudan has retained RHT. The Portuguese Empire, then LHT, introduced LHT to Portuguese Mozambique and Portuguese Angola. Although Portugal itself switched to RHT in 1928, Mozambique remained LHT as they have land borders with former British colonies. Other former Portuguese colonies in Africa including Portuguese Angola, Guinea-Bissau, São Tomé and Príncipe, and Cape Verde switched to RHT in 1928.
France introduced RHT in French West Africa and the Maghreb, where it is still used. Countries in these areas include Mali, Mauritania, Ivory Coast, Burkina Faso, Benin, Niger, Morocco, Algeria, and Tunisia. Other French former colonies that are RHT include Cameroon, Central African Republic, Chad, Djibouti, Gabon, and the Republic of the Congo.
In the late 1700s, traffic in the United States was RHT based on teamsters' use of large freight wagons pulled by several pairs of horses. The wagons had no driver's seat, so the (typically right-handed) postilion held his whip in his right hand and thus sat on the left rear horse. Seated on the left, the driver preferred that other wagons pass him on the left so that he would have a clear view of other vehicles.[better source needed] The first keep-right law for driving in the United States was passed in 1792 and applied to the Philadelphia and Lancaster Turnpike. Massachusetts formalized RHT in 1821. However, the National Road, a precursor of the Interstate Highway System, was LHT until 1850. Today the United States is RHT except the United States Virgin Islands, which is LHT like many neighbouring islands.
Some special-purpose vehicles in the United States, including certain postal service trucks, garbage trucks, and parking-enforcement vehicles, are built with the driver's seat on the right for safer and easier access to the curb. A common example is the Grumman LLV, which is used nationwide by the United States Postal Service.
As former French colonies, the provinces of Quebec and Ontario were always RHT. The province of British Columbia changed to RHT in stages from 1920 to 1923. New Brunswick, Nova Scotia, and Prince Edward Island, changed to RHT in 1922, 1923, and 1924 respectively. Newfoundland, then a British colony, changed to RHT in 1947, two years before joining Canada.
In the West Indies, colonies and territories drive on the same side as their parent countries, except for the United States Virgin Islands. Many of the island nations are former British colonies and drive on the left, including Jamaica, Antigua and Barbuda, Barbados, Dominica, Grenada, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, and The Bahamas. However, most vehicles in The Bahamas, British Virgin Islands, Cayman Islands, Turks and Caicos Islands and United States Virgin Islands are left hand drive.
LHT was introduced by the British in British India (now India, Pakistan, Myanmar, and Bangladesh), British Malaya and British Borneo (now Malaysia, Brunei and Singapore), and British Hong Kong. All are still LHT except Myanmar, which switched to RHT in 1970, although much of its infrastructure is still geared to LHT. Most cars are used RHD vehicles imported from Japan. Afghanistan was LHT until the 1950s, in line with neighbouring British India and later Pakistan.
LHT was introduced by the Portuguese Empire in Portuguese Macau (now Macau) and Portuguese Timor (now East Timor). Both places are still LHT, despite Macau now being part of RHT China, requiring a right-to-left switching interchange at the Lotus Bridge that connects the two. East Timor shares the island of Timor with Indonesia, which is also LHT, although the former (then Portuguese Timor) switched to RHT along with Portugal in 1928 before changing back to LHT in 1976 during the Indonesian occupation of East Timor.
Mainland China is RHT except the Special Administrative Regions of Hong Kong and Macau. LHT was uniform in the 1930s, then the northern provinces were RHT. Nationalist China adopted RHT in 1946. This convention was preserved when the CCP took the mainland and the KMT retreated to Taiwan.
The Philippines was mostly LHT during its Spanish and American colonial periods, as well as during the Commonwealth era. During the Japanese occupation, the Philippines remained LHT, also because LHT had been required by the Japanese; but during the Battle of Manila, the liberating American forces drove their tanks to the right for easier facilitation of movement. RHT was formalised in 1945.
Japan was never part of the British Empire, but its traffic also drives on the left. Although the origin of this habit goes back to the Edo period (1603–1868), it was not until 1872 that this unwritten rule became more or less official. That was the year when Japan’s first railway was introduced, built with technical aid from the British. Gradually, a massive network of railways and tram tracks was built, with all trains and trams being driven on the left-hand side. However, it took another half century until 1924, in which left-hand traffic was clearly written in law. Post-World War II Okinawa was ruled by the United States Civil Administration of the Ryukyu Islands and was RHT. It was returned to Japan in 1972 but did not convert back to LHT until 1978. The conversion operation was known as 730 (Nana-San-Maru, which refers to the date of the changeover, 30 July). Okinawa is one of few places to have changed from RHT to LHT in the late 20th century.
Vietnam became RHT as part of French Indochina, as did Laos and Cambodia. In Cambodia, RHD cars, many of which were smuggled from Thailand, were banned from 2001, even though they accounted for 80% of vehicles in the country.
Many former British colonies in the region have always been LHT, including Australia, New Zealand, Fiji, Kiribati, Solomon Islands, Tonga, and Tuvalu, as well as nations that were previously administered by Australia, those being Nauru and Papua New Guinea.
Samoa, a former German colony, had been RHT for more than a century, but switched to LHT in 2009. This made it the first territory in almost 30 years to change sides. The move was legislated in 2008 to allow Samoans to use cheaper vehicles imported from Australia, New Zealand or Japan, and to harmonise with other South Pacific nations. A political party, The People's Party, was formed by the group People Against Switching Sides (PASS) to try to protest against the change, with the latter launching a legal challenge, and in April 2008 an estimated 18,000 people attended demonstrations against it. The motor industry was also opposed, as 14,000 of Samoa's 18,000 vehicles were designed for RHT and the government refused to meet the cost of conversion. After months of preparation, the switch from right to left happened in an atmosphere of national celebration. There were no reported incidents. At 05:50 local time, Monday 7 September, a radio announcement halted traffic, and an announcement at 6:00 ordered traffic to switch to LHT. The change coincided with more restrictive enforcement of speeding and seat-belt laws. That day and the following day were declared public holidays, to reduce traffic. The change included a three-day ban on alcohol sales, while police mounted dozens of checkpoints, warning drivers to drive slowly.
Brazil was a colony of Portugal until the early 19th century and during this century and the early 20th century had mixed rules, with some regions still on LHT, switching these remaining regions to RHT in 1928, the same year Portugal switched sides. Other Central and South American countries that later switched from LHT to RHT include Argentina, Chile, Panama, Paraguay, and Uruguay.
Potential future shiftsEdit
Rwanda and Burundi, former Belgian colonies in Central Africa, are RHT but are considering switching to LHT like neighbouring members of the East African Community (EAC). A survey in 2009 found that 54% of Rwandans favoured the switch. Reasons cited were the perceived lower costs of RHD vehicles, easier maintenance and the political benefit of harmonious traffic regulations with other EAC countries. The survey indicated that RHD cars were 16% to 49% cheaper than their LHD counterparts. In 2014, an internal report by consultants to the Ministry of Infrastructure recommended a switch to LHT. In 2015, the ban on RHD vehicles was lifted; RHD trucks from neighbouring countries cost $1000 less than LHD models imported from Europe.
Changing sides at bordersEdit
Although many LHT jurisdictions are on islands, there are cases where vehicles may be driven from LHT across a border into a RHT area. Such borders are mostly located in Africa and southern Asia. The Vienna Convention on Road Traffic regulates the use of foreign registered vehicles in the 78 countries that have ratified it.
LHT Thailand has three RHT neighbours: Cambodia, Laos, and Myanmar. Most of its borders use a simple traffic light to do the switch, but there are also interchanges that enable the switch while keeping up a continuous flow of traffic.
There are four road border crossing points between Hong Kong and Mainland China. In 2006, the daily average number of vehicle trips recorded at Lok Ma Chau was 31,100. The next largest is Man Kam To, where there is no changeover system and the border roads on the mainland side Wenjindu intersect as one-way streets with a main road.
Although the United Kingdom is separated from Continental Europe by the English Channel, the level of cross-Channel traffic is very high; the Channel Tunnel alone carries 3.5 million vehicles per year by the Eurotunnel Shuttle between the UK and France.
Road vehicle configurationsEdit
Steering wheel positionEdit
In RHT jurisdictions, vehicles are typically configured LHD, with the steering wheel on the left side. In LHT jurisdictions, the reverse is true. The driver's side, the side closer to the centre of the road, is sometimes called the offside, while the passenger side, the side closer to the side of the road, is sometimes called the nearside.
Most windscreen wipers are designed to clear the driver's side better and have a longer blade on the driver's side and wipe up from the passenger side to the driver's side. Thus on LHD configurations, they wipe up from right to left, viewed from inside the vehicle, and do the opposite on RHD (Right Hand Drive) vehicles.
Historically there was less consistency in the relationship of the position of the driver to the handedness of traffic. Most American cars produced before 1910 were RHD. In 1908 Henry Ford standardised the Model T as LHD in RHT America, arguing that with RHD and RHT, the passenger was obliged to "get out on the street side and walk around the car" and that with steering from the left, the driver "is able to see even the wheels of the other car and easily avoids danger." By 1915 other manufacturers followed Ford's lead, due to the popularity of the Model T.
In specialised cases, the driver will sit on the nearside, or curbside. Examples include:
- Where the driver needs a good view of the nearside, e.g. street sweepers, or vehicles driven along unstable road edges. Similarly in mountainous areas the driver may be seated opposite side so that they have a better view of the road edge which may fall away for very many metres into the valley below. Swiss Postbuses in mountainous areas are a well known example.
- Where it is more convenient for the driver to be on the nearside, e.g. delivery vehicles. The Grumman LLV postal delivery truck is widely used with RHD configurations in RHT North America. Some Unimogs are designed to switch between LHD and RHD to permit operators to work on the more convenient side of the truck.
Generally, the convention is to mount a motorcycle on the left, and kickstands are usually on the left which makes it more convenient to mount on the safer kerbside as is the case in LHT. Some jurisdictions prohibit fitting a sidecar to a motorcycle's offside.
Headlamps and other lighting equipmentEdit
Most low-beam headlamps produce an asymmetrical light suitable for use on only one side of the road. Low beam headlamps in LHT jurisdictions throw most of their light forward-leftward; those for RHT throw most of their light forward-rightward, thus illuminating obstacles and road signs while minimising glare for oncoming traffic.
In Europe, headlamps approved for use on one side of the road must be adaptable to produce adequate illumination with controlled glare for temporarily driving on the other side of the road,:p.13 ¶5.8. This may be achieved by affixing masking strips or prismatic lenses to a part of the lens or by moving all or part of the headlamp optic so all or part of the beam is shifted or the asymmetrical portion is occluded.:p.13 ¶5.8.1 Some varieties of the projector-type headlamp can be fully adjusted to produce a proper LHT or RHT beam by shifting a lever or other movable element in or on the lamp assembly.:p.12 ¶5.4 Some vehicles adjust the headlamps automatically when the car's GPS detects that the vehicle has moved from LHT to RHT and vice versa.
Rear fog lampsEdit
In the European Union, vehicles must be equipped with one or two red rear fog lamps. A single rear fog lamp must be located between the vehicle's longitudinal centreline and the outer extent of the driver's side of the vehicle.
Crash testing differencesEdit
ANCAP reports that some RHD cars imported to that country did not perform as well on crash tests as the LHD versions, although the cause is unknown, and may be due to differences in testing methodology.
In most countries, rail traffic travels on the same side as road traffic. However, in many cases, railways were built using LHT British technology and, while road traffic switched to RHT, rail remained LHT. Examples include: Argentina, Belgium, Bolivia, Cambodia, Chile, Egypt, France, Iraq, Israel, Italy, Laos, Monaco, Myanmar, Nigeria, Peru, Portugal, Senegal, Slovenia, Sweden, Switzerland, Taiwan, Tunisia, Venezuela, and Yemen. In Indonesia it is the reverse (RHT for rails (even for LRT systems) and LHT for roads). France is mainly LHT for trains, except for the classic lines in Alsace-Lorraine, which belonged to Germany from 1870 to 1918, when the railways were built, along with most metro systems. China is basically LHT for long-distance trains and RHT for metro systems. Spain, which is RHT for railways has LHT for metros in Madrid and Bilbao. Metros and light rail sides of operation vary, and might not match railways or roads in their country. Trams generally operate at the same side as other road traffic because they frequently share roads.
Boats are traditionally piloted from starboard (the right-hand side) to facilitate priority to the right. According to the International Regulations for Preventing Collisions at Sea, water traffic is effectively RHT: a vessel proceeding along a narrow channel must keep to starboard, and when two power-driven vessels are meeting head-on both must alter course to starboard also. For aircraft the US Federal Aviation Regulations suggest RHT principles, both in the air and on water, and in aircraft with side-by-side cockpit seating, the pilot-in-command (or more senior flight officer) traditionally occupies the left seat.
Worldwide distribution by countryEdit
Of the 195 countries currently recognised by the United Nations, 141 use RHT and 54 use LHT on roads in general. A country and its territories and dependencies are counted as one. Whichever directionality is listed first is the type that is used in general in the traffic category.
|Country||Road traffic||Date of
|Afghanistan||RHT||Kabul adopted RHT 1955|
|Algeria||RHT||French Algeria until 1962.|
|Andorra||RHT[failed verification]||Landlocked between France and Spain.|
|Angola||RHT||1928||Portuguese colony until 1975.|
|Antigua and Barbuda||LHT||This Caribbean island was a British colony until 1958.|
|Argentina||RHT||June 10, 1945||The anniversary on 10 June is still observed each year as Día de la Seguridad Vial (road safety day).|
|Australia||LHT||British colonies before 1901. Includes Australian external territories.|
|Austria||RHT||1921–38||Originally LHT, like most of Austria-Hungary, but switched sides during the Second World War.|
|Bahamas||LHT||British colony before 1973. Caribbean island. Most passenger vehicles are LHD.|
|Bahrain||RHT||November 1967||Former British protectorate. Switched to the same side as its neighbours.|
|Bangladesh||LHT||Part of British India before 1947.|
|Barbados||LHT||This Atlantic island state was a British colony before 1966.|
|Belize||RHT||1961||Former British colony. Switched to same side as neighbours.|
|Benin||RHT||Part of French West Africa before 1960.|
|Bhutan||LHT||Under British protection before 1949.|
|Bosnia and Herzegovina||RHT||1918||Switched sides after the collapse of Austria-Hungary.|
|Botswana||LHT||British colony before 1966.|
|Brazil||RHT||1928||Portuguese colony before 1822.|
|Brunei||LHT||British protection until 1984.|
|Burkina Faso||RHT||Part of French West Africa before 1958.|
|Burundi||RHT||Belgian colony before 1962.|
|Cambodia||RHT||French colony before 1953.|
|British Columbia||1920–1922.||Interior changed 15 July 1920, Vancouver and the coastal area 1 January 1922|
|New Brunswick||1 December 1922|
|Newfoundland and Labrador||2 January 1947||Was a British Dominion until 1949.|
|Nova Scotia||15 April 1923|
|Prince Edward Island||1 May 1924|
|Cape Verde||RHT||1928||Portuguese colony before 1975.|
|Central African Republic||RHT||French colonies before 1960.|
|China||Mainland||RHT||1946||Right-hand drive cars cannot be registered or used, except for those belonging to an embassy or consulate.|
|Hong Kong||LHT||Hong Kong was a British colony from 1841 to 1941 and from 1945 to 1997, when the dependent territory was transferred to China.|
|Macau||LHT||Macau was under Portuguese rule until 1999.|
|Comoros||RHT||French colony before 1975.|
|Congo||RHT||French colony before 1960.|
|DR Congo||RHT||Belgian colony before 1960.|
| Ivory Coast
|RHT||Part of French West Africa before 1960.|
|Croatia||RHT||1926||Was then part of the Kingdom of Serbs, Croats and Slovenes.|
|Cyprus||LHT||Under UK administration before 1960. Island nation. De facto divided between the Republic of Cyprus, the Turkish Republic of Northern Cyprus, the UN buffer zone and the British base areas of Akrotiri and Dhekelia. All are LHT.|
|Czech Republic||RHT||1939||Switched during the German occupation of Czechoslovakia.|
|Denmark||RHT||Includes the Faroe Islands and Greenland.|
|Djibouti||RHT||French colony before 1977.|
|Dominica||LHT||British colony before 1978. Caribbean island.|
|East Timor||LHT||1976||Portuguese colony until 1975. Switched to RHT with Portugal in 1928; under the Indonesian annexation, it was switched back to LHT in 1976. Its LHT status remains to this day.|
|Equatorial Guinea||RHT||Spanish colony before 1968.|
|Eritrea||RHT||8 June 1964||Italian colony before 1942.|
|Eswatini (Swaziland)||LHT||British protectorate until 1968. Continues to drive on the same side as neighbouring countries.|
|Ethiopia||RHT||8 June 1964|
|Fiji||LHT||The island nation was a British colony before 1970.|
|Finland||RHT||June 8, 1858|
|France||RHT||1792||Includes French Polynesia, New Caledonia, Saint Pierre and Miquelon, Wallis and Futuna, French Guiana, Réunion, Saint Barthélemy, the Collectivity of Saint Martin, Guadeloupe, and Mayotte.|
|Gabon||RHT||French colony before 1960.|
|Gambia||RHT||October 1, 1965||British colony until 1965. Switched to RHT on 1 October 1965 being surrounded by the former French colony of Senegal.|
|Georgia||RHT||About 40% of vehicles in Georgia are RHD due to the low cost of used cars imported from Japan.|
|Ghana||RHT||August 4, 1974||British colony until 1957. Ghana switched to RHT in 1974, a Twi language slogan was "Nifa, Nifa Enan" or "Right, Right, Fourth". Ghana has also banned RHD vehicles - it prohibited new registrations of RHD vehicles after 1 August 1974, three days before the traffic change.|
|Greece||RHT||1926||Originally LHT (albeit in an unofficial manner) since independence, the establishment of the traffic code switched traffic officially to RHT traffic in 1926.|
|Grenada||LHT||British colony before 1974. Caribbean island.|
|Guinea-Bissau||RHT||1928||Portuguese colony until 1974. Drives on the same side as its neighbours.|
|Guyana||LHT||British colony until 1966. One of the only two countries in continental America which are in LHT, the other being Suriname.|
|Haiti||RHT||French colony until 1804.|
|Hungary||RHT||1941||Originally LHT, like most of Austria-Hungary, but switched sides during the Second World War.|
|Iceland||RHT||May 26, 1968||Changed from LHT on H-dagurinn. Most passenger cars were already LHD.|
|India||LHT||Part of British India before 1947.|
|Indonesia||LHT||Roads and railways were built by the Dutch, with LHT for roads to conform to British and Japanese standards and RHT for railways to conform with Dutch standards. The Jakarta MRT and Palembang LRT also use RHT.|
Did not change sides, unlike the Netherlands, in 1906.
|Ireland||LHT||Part of the United Kingdom before 1922. An island nation with a land border with the United Kingdom, which is also LHT.|
|Jamaica||LHT||British colony before 1962. Caribbean island.|
|Japan||LHT||LHT enacted in law in 1924. One of the few non-British-colony countries to use LHT. Okinawa was RHT from June 24, 1945 to July 30, 1978.|
|Kenya||LHT||Part of the British East Africa Protectorate before 1963.|
|Kiribati||LHT||UK colony before 1979. Pacific islands.|
|Kuwait||RHT||British Protectorate until 1961.|
|Kyrgyzstan||RHT||In 2012, over 20,000 cheap used RHD cars were imported from Japan.|
|Laos||RHT||French colony until 1947. The Thai-Lao Friendship Bridge is LHT.|
|Lebanon||RHT||French Mandate of Lebanon before 1946.|
|Lesotho||LHT||British protectorate from 1885 to 1966. Enclave of LHT South Africa.|
|Libya||RHT||Italian Libya colony from 1911 to 1947.|
|Liechtenstein||RHT||Landlocked between Switzerland and Austria.|
|Madagascar||RHT||Former French colony.|
|Malawi||LHT||British colony before 1964.|
|Malaysia||LHT||British colony before 1957.|
|Maldives||LHT||This island nation was a British colony before 1965.|
|Mali||RHT||Part of French West Africa before 1960.|
|Malta||LHT||British colony before 1964.|
|Marshall Islands||RHT||Was under American control.|
|Mauritania||RHT||Part of French West Africa before 1960. Mining roads between Fderîck and Zouérat are LHT.|
|Mauritius||LHT||This island nation was a British colony before 1968.|
|F.S. Micronesia||RHT||Was under American control.|
|Monaco||RHT||Was under French control.|
|Morocco||RHT||Former French colony.|
|Mozambique||LHT||Portuguese colony until 1975. Drives on the same side as its neighbours.|
|Myanmar||RHT||1970||British colony until 1948. Switched to RHT in 1970. Most passenger vehicles are RHD.|
|Namibia||LHT||1918||When South Africa occupied German South West Africa in 1920, it switched to LHT. Administered by South Africa 1920–1990.|
|Nauru||LHT||1918||This island nation was administered by Australia, New Zealand and the United Kingdom until 1968.|
|Nepal||LHT||Shares open land border with LHT India.|
|Netherlands||RHT||1906||Includes Curaçao, Sint Maarten, and Aruba|
|New Zealand||LHT||These Pacific islands, including territories Niue and Cook Islands, were former British colonies.|
|Niger||RHT||Part of French West Africa before 1958.|
|Nigeria||RHT||1972||British colony until 1960. Switched to RHT due to being surrounded by RHT former French colonies.|
|North Korea||RHT||1946||Was LHT during the period of Japanese rule. Switched to RHT after the Surrender of Japan.|
|Pakistan||LHT||Part of British India before 1947.|
|Palau||RHT||Most passenger vehicles are RHD.|
|Papua New Guinea||LHT||After Australia occupied German New Guinea during World War I, it switched to LHT.|
|Philippines||RHT||1946||Was LHT during the Spanish and American colonial periods. Switched to RHT after the Battle of Manila in 1945. Philippine National Railways switched to RHT in 2010.|
|Portugal||RHT||1928||Colonies Goa, Macau and Mozambique, which had land borders with LHT countries, did not switch and continue to drive on the left. The Porto Metro uses RHT.|
|Qatar||RHT||Former British protectorate. Switched to same side as neighbours.|
|Romania||RHT||1919||Regions of Romania (Transylvania, Bukovina, parts of the Banat, Crișana and Maramureș) that were part of Austria-Hungary were LHT until 1919.|
|Russia||RHT||In the Russian Far East RHD vehicles are common due to the import of used cars from nearby Japan. Railway between Moscow and Ryazan, Sormovskaya line in Nizhny Novgorod Metro and Moskva River cable car use LHT.|
|Saint Kitts and Nevis||LHT||This Caribbean island nation was a British colony before 1983.|
|Saint Lucia||LHT||These Caribbean island nations were British colonies before 1979.|
|Saint Vincent and the Grenadines||LHT|
|Samoa||LHT||September 7, 2009||Switched to LHT for economical reasons: to allow cheaper importation of cars from Australia, New Zealand and Japan.|
|San Marino||RHT||Enclaved state surrounded by Italy.|
|São Tomé and Príncipe||RHT||1928||Portuguese colony until 1975.|
|Senegal||RHT||Part of French West Africa before 1960.|
|Serbia||RHT||1926||(as part of Kingdom of Serbs, Croats and Slovenes), Vojvodina was LHT while part of Austria-Hungary.|
|Seychelles||LHT||This island nation was a British colony until 1976.|
|Sierra Leone||RHT||March 1, 1971||British colony until 1961. Switched to RHT being surrounded by neighbouring former French colonies. Furthermore, it banned the importation of RHD vehicles in 2013.|
|Singapore||LHT||This island nation was a British colony until 1963. It was also part of Malaysia until 1965.|
|Slovakia||RHT||1939–41||Switched during the German occupation of Czechoslovakia.|
|Slovenia||RHT||1926||(as part of Kingdom of Serbs, Croats and Slovenes), officially LHT from 1915 as part of Austria-Hungary.|
|Solomon Islands||LHT||This island nation was a British protectorate before 1975.|
|Somalia||RHT||The former British Somaliland had LHT until it formed a union with the former Italian Somaliland which had RHT.|
|South Africa||LHT||British colony before 1909.|
|South Korea||RHT||1946||Was LHT during the period of Japanese rule. Switched to RHT after the Surrender of Japan.|
|South Sudan||RHT||1973||Part of Sudan until 2011.|
|Spain||RHT||1924||Up to the 1920s Barcelona was RHT, and Madrid was LHT until 1924. The Madrid Metro still uses LHT.|
|Sri Lanka||LHT||Part of British Ceylon from 1815 to 1948.|
|Sudan||RHT||1973||Formerly Anglo-Egyptian Sudan, it switched sides 17 years later to match neighbours.|
|Suriname||LHT||1920s||Dutch colony until 1975. One of the only two countries in continental America which are in LHT, the other being Guyana. Did not switch sides, unlike the Netherlands itself.|
|Sweden||RHT||September 3, 1967||The day of the switch was known as Dagen H. Most passenger vehicles were already LHD.|
|Syria||RHT||Was under French control.|
|Taiwan||RHT||1946||Was LHT during the period of Japanese rule. The government of the Republic of China changed Taiwan to RHT in 1946 along with the rest of China.|
|Tanzania||LHT||Part of the British East Africa Protectorate until 1961.|
|Thailand||LHT||One of the few non-British-colony LHT countries. Shares a long land border with RHT Myanmar, Laos and Cambodia.|
|Togo||RHT||Part of French West Africa until 1960.|
|Tonga||LHT||British protectorate before 1970. Polynesian island nation.|
|Trinidad and Tobago||LHT||British colony before 1962. Caribbean island.|
|Tunisia||RHT||RHT was enforced in the French protectorate of Tunisia since 1881.|
|Tuvalu||LHT||Formerly a British colony. Became independent in 1978.|
|Uganda||LHT||Part of British Uganda Protectorate from 1894 until 1962.|
|Ukraine||RHT||1922||Western parts of the country had LHT under Austro-Hungarian Empire|
|United Arab Emirates||RHT||Former British protectorate. Switched to same side as neighbours.|
|United Kingdom||Mainland||LHT||An island nation with a land border with the Republic of Ireland, which is also LHT. Also LHT are the Crown dependencies of the Isle of Man, and the British Overseas Territories of Anguilla, Ascension Island, Bermuda, Montserrat, Saint Helena, and Tristan da Cunha.|
|British Indian Ocean Territory||RHT|
|British Virgin Islands||LHT||Most passenger vehicles are LHD.|
|Cayman Islands||LHT||Most passenger vehicles are LHD.|
|Falkland Islands||LHT||Briefly switched to RHT during the Falklands War.|
|Gibraltar||RHT||1929||Gibraltar is RHT because of its land border with Spain.|
|Guernsey||LHT||Was RHT from 1940 to 1945 due to the German occupation.|
|Jersey||LHT||Was RHT from 1940 to 1945 due to the German occupation.|
|Pitcairn Islands||LHT||There is no official vehicle registration system.|
|Turks and Caicos Islands||LHT||Most passenger vehicles are LHD.|
|United States||Contiguous U.S.||RHT|
|U.S. Virgin Islands||LHT||U.S. Virgin Islands, like much of the Caribbean, is LHT and is the only American jurisdiction that still has LHT, because the islands drove on the left when the US purchased the former Danish West Indies in the 1917 Treaty of the Danish West Indies. Most passenger vehicles are LHD.|
|Northern Mariana Islands||RHT|
|Uruguay||RHT||September 2, 1945||Became LHT in 1918, but as in some other countries in South America, changed to RHT in 1945. A speed limit of 30 km/h (19 mph) was observed until 30 September for safety.|
|Vanuatu||RHT||Co-administered under France and United Kingdom until 1980.|
|Vatican City||RHT||Enclave of Rome.|
|Vietnam||RHT||French colony until 1945. The Long Bien Bridge uses LHT.|
|Western Sahara||RHT||Spanish colony until the late 1900s.|
|Yemen||RHT||1977||South Yemen, formerly the British colony of Aden, changed to RHT in 1977. A series of postage stamps commemorating the event was issued. At that time, North Yemen was already RHT.|
|Zambia||LHT||British colony before 1964.|
|Zimbabwe||LHT||British colony before 1965 (de facto) or 1980 (de jure).|
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Media related to Right- and left-hand traffic at Wikimedia Commons
- Google Maps placemarks of border crossings where traffic changes sides (browser-based), also available as a Google Earth placemarks file (requires Google Earth)
- The Extraordinary Street Railways of Asunción, Paraguay