Texas DMV Sample Test

Texas allows right turns on red after the driver has come to a complete stop and yielded to pedestrians and cross traffic, unless a posted sign reads "No Turn on Red." This is the default rule in most US states. Unlike New York City, there is no blanket prohibition in any Texas city.

State Highway 130 (SH 130) between Austin and Seguin is posted at 85 mph — the highest legal speed limit on any public road in the United States. Most other Texas interstates are posted at 75–80 mph. The Basic Speed Law still applies: drivers must reduce speed when conditions demand.

Texas uses the federal standard 0.08% BAC as the legal limit for adult drivers 21 and older. Under 21 is zero tolerance (0.00–0.02% depending on measurement method). Commercial drivers are held to 0.04%. Drivers can still be arrested for DWI below 0.08% if impairment is observed.

Texas allows unprotected left turns on a solid green light, provided the driver first yields to oncoming traffic and pedestrians. A green arrow (protected left) gives the turning driver priority and no yielding is required. Solid green with no arrow is the more common signal pattern.

Texas posts most school zone speed limits at 20 mph during designated morning and afternoon hours when children are present. Cities may set limits as low as 15 mph. Fines for school-zone violations are doubled, and use of a handheld device is prohibited in active school zones regardless of age.

Orange construction signs warn of work zones and temporary traffic conditions.

A detour sign directs traffic to an alternate route around a closure or work area.

A sharp curve sign warns drivers to reduce speed and prepare for a significant change in road direction.

A stop sign means you must come to a complete stop and proceed only when it is safe.

A yield sign means slow down, give the right-of-way when required, and stop if necessary.