Driver's License Test Prep
Texas Practice Defensive Driving

According to the glossary, at what speed do low-beam headlights stop giving you enough distance to stop within your headlight range?

  1. A.
    30 mph is the cap because low beams reach less
  2. B.
    65 mph, which is the high beam cap
  3. C.
    There is no set cap for either beam
  4. D.
    45 mph is the manual's cap for low beams Correct
The Why

The answer is "45 mph is the manual's cap for low beams"

The over-driving-headlights entry sets 45 mph as the cap for low beams and 65 mph for high beams before your stopping distance runs past what the beams light up. Choice B swaps the two caps, which learners fall for because higher beams and higher speeds sound like they should share a number.

Why the others miss

The traps in the wrong answers

A. 30 mph is the cap because low beams reach less

The glossary sets the low-beam cap higher than 30 mph. This answer pulls down the actual cap to match the urban speed learners associate with low-beam driving.

B. 65 mph, which is the high beam cap

That figure is the high-beam cap, not the low-beam one. This answer swaps the two beam caps printed in the same sentence, the easiest slip when reading a two-number rule too quickly.

C. There is no set cap for either beam

The glossary prints specific caps for both beams. This answer treats over-driving headlights as a judgment call, missing that the glossary gives fixed numbers.

The Rule

This question tests your knowledge of Defensive Driving in Texas. Source: Texas Driver Manual, "Appendix A: Glossary of Terms," p.74..

More from this topic

Related Texas questions

More than a book

You just took one Texas question apart. The book does it for the whole test.

The Texas book unlocks a free companion: an adaptive study plan, progress synced across your devices, a denser laminate cheat sheet, and a test-day walkthrough. Verify your copy once, usually in seconds; there's nothing extra to buy.

Get the book on Amazon

$18.99 paperback, free companion included.

Free study plan

Your free Texas study plan

A short run of study emails for the Texas DPS test: what to drill, the rules people trip on, and a final pre-test checklist. The printable cheat sheet is free to grab either way.

One email a few times a month. No spam, unsubscribe anytime. Privacy.