Texas Driver's License Knowledge TestTraffic Signs and SignalsHard

A driver is traveling on a divided highway with multiple lanes in each direction. They observe a large green rectangular sign overhead with a white shield symbol containing the number '45'. What type of highway is this driver likely on?

  1. AA county road.
  2. BA U.S. Interstate Highway.
  3. CA Texas Farm to Market road.
  4. DA state highway.
Show answer & explanation

Correct answer: B. A U.S. Interstate Highway.

The white shield symbol containing a number is the distinctive marker for a U.S. Interstate Highway. Guide signs (large green rectangular signs) often display these shields to direct drivers to specific interstates.

Why the other options are wrong

  • A. County roads rarely have such prominent overhead guide signs or federal shields.
  • C. Farm to Market roads have a distinctive black and white sign with 'FM' and a number.
  • D. State highways typically have a black and white square or rectangular shield.

Interstate Highway Shield

The distinctive red, white, and blue shield symbol containing a number, used to mark U.S. Interstate Highways.

  • Indicates a U.S. Interstate Highway.
  • Often displayed on guide signs.
  • Numbers indicate east-west (even) or north-south (odd) routes.

Memory trick: Shield on green means 'See the high-speed Interstate scene'.

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