Geometric Design of Roads

The policy for the geometric design of highways and streets in America is based on AASHTO guidelines and is largely based on the number of vehicles per day to determine the safest maximum speed. Other considerations for road design engineers include road alignment (flat to curve) for which a formula is given, maximum grade, width, sight distances, and superelevation or road cambering. If you want to learn more about the geometric design of highways and roadways, read this informative article by a practicing civil engineer who specializes in road engineering.