does the us drive on the right or left
Left- and right-hand traffic 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 could be sure to keep clear of the wheels of oncoming wagons.[10]
Turn on red Right turns on red are permitted in many regions of North America. While Western states have allowed it for more than 50 years;[citation needed] eastern states amended their traffic laws to allow it in the 1970s as a fuel-saving measure in response to motor fuel shortages in 1973. The Energy Policy and Conservation Act of 1975 required in ยง362(c)(5) that in order for a state to receive federal assistance in developing mandated conservation programs, they must permit right turns on red lights.[2] All 50 states, the District of Columbia, Guam, and Puerto Rico have allowed right turns on red since 1980, except where prohibited by a sign or where right turns are controlled by dedicated traffic lights. (On January 1, 1980, Massachusetts became the last US state to allow right turns on red.[3]) The few exceptions include New York City,[4] where right turns on red are prohibited, unless a sign indicates otherwise.