What should you do if your cell phone rings and you do not have a hands-free device?

  1. Answer the call and keep the conversation short.
  2. Do not answer the phone and let it go to voice mail. ✓
  3. Answer the call if you are stopped at a red light.

Answer: B. Do not answer the phone and let it go to voice mail.

Do not answer the phone; let the call go to voicemail.

Why this is the answer

The California Driver Handbook says a ringing cell phone should not be answered while you drive. It tells drivers to let the call go to voicemail, and if a call must be made or returned, to pull safely off the road first. The handbook also states that using a handheld phone while driving is unsafe and illegal. Because the question says you have no hands-free device, answering would mean using the phone handheld, which the passage does not allow. Letting it ring avoids that.

Why the other answers are wrong

Remember it

If the phone rings, let voicemail take it; if you truly need to talk, get off the road first.

Official handbook: California Driver Handbook (DL 600), Section 8: Safe Driving, p. 70

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.