Which centerline prohibits drivers in either direction from passing another motor vehicle?
Correct answer: C – Two solid yellow lines
Two solid yellow centerlines prohibit passing by traffic in either direction. The Colorado handbook recognizes a limited exception for safely passing a bicyclist when the required clearance can be provided and the oncoming lane is clear. That exception does not authorize crossing the lines to pass another motor vehicle.
Source: Colorado Driver Handbook — “Pavement Markings—Yellow Lines”



