Driver's License Test Prep
Texas Practice Regulatory Signs

A Texas regulatory sign along a roadway shows a black truck silhouette inside a red circle with a red slash through it. According to the manual, what does the sign require?

White square with black border showing a black truck silhouette inside a red circle with a red diagonal slash.
  1. A.
    Trucks may not use or enter that roadway. Correct
  2. B.
    Trucks must move to the right-hand lane only.
  3. C.
    Trucks must slow down before entering the roadway.
  4. D.
    Trucks must exit at the next available ramp.
The Why

The answer is "Trucks may not use or enter that roadway."

A truck silhouette inside a red circle-and-slash is a regulatory prohibition: trucks may not use or enter the roadway where the sign is displayed. Choice B is the trap. Drivers who confuse this outright ban with Texas's separate 'trucks must use the right lane' regulatory sign read the truck symbol as a lane-assignment cue and pick the wrong rule.

Why the others miss

The traps in the wrong answers

B. Trucks must move to the right-hand lane only.

That describes the separate Texas regulatory sign restricting trucks to the right lane. This answer substitutes the trucks-use-right-lane rule for the outright roadway ban.

C. Trucks must slow down before entering the roadway.

The sign forbids trucks from entering, not just slowing them down. This answer reads the red slash as an advisory yellow-diamond warning to reduce speed.

D. Trucks must exit at the next available ramp.

The sign posts a permanent ban, not an instruction to leave the current stretch of road at a ramp. This answer applies a temporary-detour habit to a permanent prohibition.

The Rule

This question tests your knowledge of Regulatory Signs in Texas. Source: Texas Driver Manual, "Table 19: Regulatory and Warning Signs," p.30..

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