Texas Trucking Regulations

Texas allows a maximum gross vehicle weight of 80,000 lbs on interstate highways, matching the federal standard. However, the state offers exceptions through its oversize/overweight permit system administered by TxDMV. Single-trip permits can be obtained online through the Texas Permitting and Routing Optimization System (TxPROS) for loads up to 254,300 lbs. Annual permits are available for loads exceeding 80,000 lbs but within 120,000 lbs. Texas also participates in the 2060 Bridge Formula, which can allow higher axle weights on certain state roads. Permits for super-heavy loads require route surveys and sometimes pilot cars. The Texas Department of Transportation maintains a designated highway system map showing which roads can handle heavier loads. Penalties for overweight violations can reach $5,000 for first offenses, with repeat offenders facing vehicle impoundment.

Texas follows federal Hours of Service (HOS) rules without state-specific modifications. Commercial drivers are limited to 11 hours of driving time within a 14-hour on-duty window after 10 consecutive hours off duty. The state enforces ELD mandates at weigh stations and roadside inspections conducted by DPS Commercial Vehicle Enforcement troopers. Texas operates over 30 permanent weigh stations plus mobile enforcement units. The DPS conducts roughly 350,000 commercial vehicle inspections annually, ranking among the highest in the nation. Drivers should note that Texas does not offer any short-haul exemptions beyond the federal 150 air-mile radius provision. Pre-trip and post-trip inspections are required, and failure to maintain accurate logs can result in citations and out-of-service orders that impact CSA scores.

Texas requires all commercial motor vehicles to display a valid USDOT number and meet FMCSA registration requirements. The state imposes a $50 annual registration fee for intrastate carriers through TxDMV. Texas also enforces the federal Unified Carrier Registration (UCR) program. Motor carriers operating solely within Texas must obtain a Texas Motor Carrier certificate. The state has specific regulations for hazmat transport, including mandatory permits for transporting radioactive materials through certain corridors. Texas requires mud flaps on all commercial vehicles and enforces strict lighting requirements for wide loads. The Texas Administrative Code Title 43 governs all transportation-specific rules, and carriers should monitor TxDMV bulletins for regulatory updates.

Texas does not require diesel emissions testing for commercial trucks at the state level, unlike California's CARB standards. However, trucks operating in EPA nonattainment areas — particularly the Dallas-Fort Worth and Houston-Galveston regions — must comply with federal clean air requirements. The Texas Commission on Environmental Quality (TCEQ) administers the Texas Emissions Reduction Plan (TERP), which offers grants to replace or retrofit older diesel engines. Idling restrictions apply in some Texas cities: Austin limits idling to 5 minutes near schools and hospitals, and El Paso has similar municipal ordinances. Owner-operators hauling into Texas from California should verify their equipment meets EPA 2010 or newer engine standards to avoid issues if they later run California routes.