Which side of the road does the United States drive on?

The United States drives on the right-hand side of the road in all 50 states and Washington, D.C.; the primary exception is the U.S. Virgin Islands, where drivers keep left. Most vehicles across U.S. jurisdictions are left-hand-drive (steering wheel on the left), and traffic rules, signs, and lane markings are standardized to support right-side travel.

The nationwide rule

Across the continental U.S., Alaska, Hawaii, and Washington, D.C., traffic keeps right and vehicles are left-hand-drive. Road signs, signals, and markings follow the federal Manual on Uniform Traffic Control Devices (MUTCD), promoting consistency from state to state. Speed limits are posted in miles per hour, and white lines separate lanes traveling in the same direction while yellow lines separate opposite directions of travel.

Notable exceptions and territorial nuances

While the “keep right” rule is nearly universal under U.S. jurisdiction, a few territories have distinct practices. Here is how the major U.S. territories handle the side of travel:

• All 50 states + Washington, D.C.: Drive on the right; vehicles are predominantly left-hand-drive; speed limits in mph.
• Puerto Rico: Drive on the right; signs typically in Spanish; speed limits in mph (some signs may show km/h equivalents).
• Guam: Drive on the right; mph.
• Northern Mariana Islands: Drive on the right; mph.
• American Samoa: Drive on the right; mph.
• U.S. Virgin Islands (St. Thomas, St. John, St. Croix): Drive on the left; most vehicles are still left-hand-drive; mph.

In short, the U.S. Virgin Islands are the major exception—drivers keep left there—while the rest of the United States and its principal territories keep right.

Why the U.S. ended up driving on the right

The U.S. alignment with right-hand traffic is the product of early laws and automotive-era standardization. The key developments include:

1. Late 18th century: Early “keep right” laws appeared in places like Pennsylvania (1792) and New York, reflecting wagon traffic customs and safety concerns on busy roads.
2. Early 19th century: Territories such as Louisiana codified keep-right rules (1804), and the norm spread west with expansion.
3. Automobile era: The left-hand-drive Ford Model T (introduced in 1908) made right-side driving more practical and popular nationwide.
4. 20th century standardization: State statutes and the Uniform Vehicle Code harmonized right-side rules and signage across the country.

By the mid-20th century, right-side driving was uniform across the states, reinforced by standardized vehicle design and traffic control systems.

Practical notes for visitors and new residents

If you’re transitioning from a left-driving country, a few rules and conventions are especially helpful to remember in the U.S. (and its territories):

• Steering wheel is on the left; keep the roadway centerline on your left and the curb on your right.
• Right turn on red after a complete stop is legal in most of the U.S. unless a sign prohibits it; in New York City, it’s prohibited by default unless a sign specifically allows it.
• Left turn on red from a one-way street to another one-way street is allowed in many states but not all—check local law.
• Speed limits and distances are posted in miles per hour and miles, respectively.
• At four-way stop intersections, the first vehicle to stop proceeds first; if two arrive simultaneously, yield to the driver on your right.
• In the U.S. Virgin Islands, remember to keep left and take extra care with curves and hills; you’ll often be driving a left-hand-drive vehicle on the left side of the road.

Keeping these practices in mind makes it easier to adapt quickly and drive safely, whether you’re touring a city or navigating rural highways.

Enforcement, signs, and lane markings

Consistent signage and markings reinforce right-side travel across U.S. roads, helping drivers anticipate traffic flow and lane usage.

• Yellow lines separate opposing traffic; white lines separate lanes moving in the same direction.
• Stop signs are red octagons; yield signs are red-and-white triangles; route shields and interstate markers are standardized in shape and color.
• Center two-way left-turn lanes are marked by solid and dashed yellow lines.
• High-occupancy vehicle (HOV/carpool) lanes are commonly on the left and marked with a diamond symbol, with restrictions during posted hours.

These uniform standards provide clear cues for domestic drivers and visitors alike, reducing confusion and improving safety.

Bottom line

The U.S. drives on the right-hand side, with left-hand-drive vehicles, in all states and most territories. The standout exception is the U.S. Virgin Islands, which keeps left. Visitors should also be aware of common rules like right-on-red (with local exceptions) and the meaning of U.S. lane markings and signs.

Summary

Answer: Right side nationwide; U.S. Virgin Islands drive on the left. Most vehicles are left-hand-drive, speed limits are in mph, and standardized signs/markings help maintain consistent, predictable traffic flow.

Is USA steering left or right?

left
Americans and the rest of the world not influenced by British colonialism drive in the right lane and have steering wheels on the left side of the care.

Is the US driving right or left?

Right Side
The Federal Highway Administration has often been asked about the American practice of driving on the right, instead of the left, as in Great Britain, our “Mother Country.” Albert C.

Is the US right hand or left hand?

United States
However, the National Road was LHT until 1850, “long after the rest of the country had settled on the keep-right convention”. Today the United States is RHT except the United States Virgin Islands, which is LHT like many neighbouring islands.

Is America the only country with left-hand drive?

Around 64 countries drive on the left-hand side of the road while the rest of the world drives on the right. In Europe, very few countries drive on the left like we do. These are The Channel Islands, Cyprus, Ireland, the Isle of Man and Malta.