This link will take you to the Texas laws for commercial vehicle weight, length and size enforcement section of the Texas Administrative Code:
https://texreg.sos.state.tx.us/public/readtac$ext.ViewTAC?tac_view=5&ti=37&pt=1&ch=4&sch=D&rl=Y
From that link it reads:
Rules
§4.51 | Stopping, Weighing and Reducing Excess Cargo of Loaded Motor Vehicles |
§4.52 | Rearranging Excess Cargo |
§4.53 | Unloading and Reducing Loads consisting of Dangerous Commodities |
§4.54 | Minimum Standards for Scales not Furnished by the Texas Department of Public Safety |
§4.55 | Interpretation of Length Limitations and Number of Vehicles in a Combination of Vehicles |
§4.56 | Uniform Weighing Procedures for Weight Enforcement Officers |
§4.57 | Safety and Driver Training Requirements for Certain Permits |
This governs drivers and owners of trucks which haul large freight such as those who pick up furniture in Texas for companies like University Furnishings in Garland (more here, here, and here).