Traffic Signs & Signals — Idaho

Idaho CDL practice test: 416 free practice questions (Based on the official driver handbook). The official format is not yet verified; check the official site before your test. Traffic Signs & Signals: 3 questions. Updated

Regulatory, warning and guide signs, plus traffic light and pavement marking questions.

This topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines.

Topic / MetricValue
TopicTraffic Signs & Signals
License testIdaho CDL permit (CLP) knowledge tests
Topic questions3 (1% of 416 total)
Review statusThis topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines.

Official handbook

Not yet verified State CDL manual (based on the AAMVA model manual) link not yet collected

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Questions (3)

1. A driver should test the tractor protection valve by:
  1. Pulling the yellow, diamond-shaped knob.
  2. Releasing air with the brake pedal. ✓
  3. Unlocking the trailer doors.

Answer: B. Releasing air with the brake pedal.

Official handbook: Official handbook
2. When approaching a drawbridge controlled by a green traffic light:
  1. You must stop.
  2. You may proceed without stopping. ✓
  3. You must wait for the light to change from green to yellow.

Answer: B. You may proceed without stopping.

Official handbook: Official handbook
3. When should a driver sign a vehicle inspection report?
  1. After every trip
  2. If noted defects are repaired ✓
  3. After each fueling

Answer: B. If noted defects are repaired

A driver should sign the vehicle inspection report if noted defects are repaired or certified as not needing repair. The handbook ties your signature to defect certification, not to completing a trip or stopping for fuel. It says a written inspection report may be required each day, and the motor carrier must fix any safety-related items listed and certify that repairs were done or were not needed. You sign the report only when defects were noted and that certification exists. The passenger-bus section repeats the same idea for reviewing the previous driver's report. That is why the signing point is after noted defects are repaired or cleared.
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Source

Last checked: 2026-10-17 · Verified from official source

Updated: · Based on the official driver handbook