On a two-lane road, what special sight distance allows a driver to safely pass another car when traffic is coming from the other direction?

The special sight distance that allows a driver to safely pass another car when traffic is coming from the other direction is called Passing Sight Distance. This is the minimum sight distance required on a two-lane, two-way highway that enables a driver to complete a passing maneuver of a slower vehicle safely and comfortably without interfering with an opposing vehicle traveling at the design speed of the highway.