Understanding: A Virginia Driver’s Manual Course (Online) SECTION 2: Traffic Signals, Signs and Pavement Markings Lane Use Signals Lesson Progress 0% Complete Lane Use Signals Lane use signals indicate lanes where you can and cannot drive during different hours of the day. Red X: Never drive in a lane marked with a red X signal. Yellow X or Yellow Diagonal Downward Arrow: These signals mean that you should move out of the lane as soon as safely possible. Green Arrow: You are permitted to drive in a lane marked with a green arrow signal. Left-turn Arrow: You are permitted to enter in a lane marked with a one-way or two-way arrow only to turn in the direction of the arrow. Previous Topic Back to Lesson Next Topic