Texas Car / Permit practice question · Speed & Space Management

A minimum speed limit is posted on the highway you are using. This means that:

Answer choices

• You may not travel slower than that speed under normal conditions— Correct answer
• The number applies only to trucks and buses
• It is only a suggestion and carries no legal weight
• You must average that speed over the whole trip

Why this is the answer

Drivers must obey posted minimum as well as maximum speed limits, which exist for the orderly flow of traffic under normal conditions. So you may not travel slower than the posted minimum when conditions are normal. If you can't or don't want to go at least that fast, the handbook says to stay off the highway.

Source: Texas Driver Handbook — Speed Limits

Content reviewed against official driver handbooks · August 12, 2026