You are approaching a railroad crossing with no warning devices and are unable to see 400 feet down the tracks in one direction. The speed limit is:

  1. 15 mph. ✓
  2. 20 mph.
  3. 25 mph.

Answer: A. 15 mph.

The speed limit is 15 mph when you approach a railroad crossing and cannot see the tracks for 400 feet.

Why this is the answer

The handbook sets 15 mph as the limit within 100 feet of a railroad crossing when your view of the tracks is blocked at 400 feet. It also notes you may go faster only if the crossing has gates, a warning signal, or a flagman. With no warning devices at the crossing you describe and a limited view down the tracks, the 15 mph limit applies, so you should slow to that speed before you reach the tracks.

Why the other answers are wrong

Remember it

Think of it as a visibility test: if you can't see 400 feet of track, the number on your speedometer should read 15.

Official handbook: California Driver Handbook (DL 600), Section 7: Laws and Rules of the Road, p. 51

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.