Who regulates the standards that vehicle inspectors must adhere to in Texas?

The Texas Department of Public Safety (DPS) is the correct answer because it is responsible for establishing and enforcing the standards that vehicle inspectors must adhere to in Texas. This includes overseeing inspections for safety and emissions to ensure that vehicles on the road are compliant with state regulations. The DPS ensures that inspectors are properly trained and certified, which is critical for maintaining the integrity and safety of the state's transportation system.

The other entities mentioned have different roles; for instance, the Texas Department of Transportation primarily focuses on transportation infrastructure and planning, rather than directly regulating vehicle inspections. The Texas Environmental Commission addresses environmental concerns, such as pollution control, which may involve vehicle emissions but does not regulate the inspection process itself. Similarly, the Texas Vehicle Registration Authority deals with the registration of vehicles rather than the standards for vehicle inspections. This clearly delineates the DPS's role as the regulatory body for vehicle inspection standards in Texas.