You are driving on a freeway posted for 65 MPH. The traffic is traveling at 70 MPH. You may legally drive:

  1. 70 mph or faster to keep up with the speed of traffic.
  2. etween 65 mph and 70 mph.
  3. No faster than 65 mph. ✓

Answer: C. No faster than 65 mph.

You may drive no faster than 65 mph, the posted limit on that freeway.

Why this is the answer

The handbook says you may never drive faster than is safe for the road conditions, and that unless a sign says otherwise, the maximum speed limit on most California highways is 65 mph. Other vehicles around you are one of the things that shape a safe speed, so heavy, fast traffic is a reason to adjust, not a license to exceed the limit. The posted number stays your ceiling, and if conditions are poor you should be under it.

Why the other answers are wrong

Remember it

Read the sign as a ceiling, not a target, and let the traffic around you pull you lower rather than higher.

Official handbook: California Driver Handbook (DL 600), Section 8: Safe Driving, p. 67

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.