Street racing is legal:

  1. During the night.
  2. During periods of low traffic.
  3. In clear weather.
  4. Under no circumstances. ✓

Answer: D. Under no circumstances.

Street racing is legal under no circumstances — it is illegal in Texas at all times.

Why this is the answer

The handbook says plainly that street racing, also called drag racing, is illegal. It explains that races usually happen on public roads at high speeds, so drivers cannot react to hazards or changing conditions, which often leads to crashes with serious injuries or fatalities. The handbook also lists the activities a person may not take part in, including a race, a speed competition, a drag race or acceleration contest, and a test of the operator's physical endurance. Nothing about night, light traffic, or clear weather changes that.

Why the other answers are wrong

Remember it

Keep the pair together in your head: street racing and drag racing are both illegal, no matter the clock, the traffic, or the sky.

Official handbook: Texas Driver Handbook (DL-7), Chapter 8: Speed and Speed Limits , p. 46

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.