Regulatory Signs
Bus Carpool Lane Ahead sign
A diamond-marked high-occupancy lane for buses and carpools begins ahead.
- Shape
- Horizontal rectangle
- Color
- White with black
- Type
- Regulatory
What to do
- Only vehicles meeting the posted occupancy rules may use it, so single-occupant drivers should stay in the general lanes.
How to read it
Horizontal rectangle. Wider than it is tall. This shape is mostly used for guidance and information, and for some rules.
White with black. Black on white is a regulatory sign: a traffic law you must follow.
Regulatory sign. Regulatory signs state traffic laws. Ignoring one is a violation.
Signs follow the national standard (the MUTCD) in every state. Your state handbook is the final word for your test.
Related signs
Signs that look similar or come up together on the test.
Road signs quiz and flashcards
Drill every sign on your phone, along with the rest of your state’s test.
Not a government website. USA DMV (usadmv.app) is an independent study resource. It is not affiliated with, endorsed by or operated by any state DMV, the Texas Department of Public Safety or any other government agency. Practice questions are written to reflect official driver handbooks but are not the official test questions. Always confirm current requirements with your state’s licensing agency.