Safe DrivingQuestion 50 of 120
You are about to change lanes on a busy interstate. What is the correct communicating procedure?
a.Signal early, check mirrors and the blind spot, change lanes gradually, and cancel the signal after completing the move
b.Change lanes first and signal once you are established
c.Flash your headlights instead of signaling
d.Signal only if another vehicle is close behind
Explanation
Signaling early gives other drivers time to react, and cancelling afterward prevents confusion about your intentions. Signaling after the move, substituting headlight flashes, or signaling only sometimes leaves other drivers guessing.
Practice all 120 questions free — no signup required.
Related questions on this topic
- You are driving a placarded hazardous materials load and approach an unguarded railroad crossing. What must you do?
- Why should you never start across a railroad crossing unless you are certain you can clear it completely?
- You are entering a highway work zone with reduced lanes and workers present. What is the correct driving behavior?
- You must stop on the shoulder of a divided highway because of a mechanical problem. Where do you place your warning devices?
- You are driving an empty flatbed trailer in strong crosswinds on an open stretch of highway. What is the greatest concern?
- Which surface is most likely to be icy first when temperatures drop toward freezing?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against Commercial Driver's License (CDL) General Knowledge Test · How we review