Road rules
In United States you drive on the right side. Most cars have automatic transmission.
Speed limits
Unless otherwise posted, the speed limits for cars and motorcycles are as follows: 24-74 mph (40-120 km/h) in all built-up areas, 44-74 mph (72-120 km/h) on undivided highways, 60-80 mph (97-129 km/h) on motorways and 60-80 mph (97-129 km/h) on expressways.
Turn on red
Right turn on red lights is allowed unless a sign explicitly forbids it.
Alcohol
It is illegal to drive with blood alcohol content higher than 0.08%.
Data
BasicStartupBusiness
Driving side (left or right), transmission (manual or automatic), speed limits, alcohol limit and turn on red allowance.
Refresh frequency
Monthly
Sourced
In-house
Developer documentation
Road rules category is available in production API version 2.