Which class of Texas driver's license allows drivers 18 or older to operate combination vehicles with a GCWR of 26,001 lbs. or more?

The correct answer is Class A. This classification allows drivers who are 18 years old or older to operate combination vehicles that have a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more. Class A licenses are specifically designed for large vehicles and combinations, which typically include trailers and other vehicles that contribute to reaching that weight threshold.

In contrast, a Class B license permits drivers to operate single vehicles with a GVWR of 26,001 pounds or more, and also allows them to tow certain lighter trailers. A Class C license is intended for smaller vehicles and those designed to transport passengers or hazardous materials, but does not cover the requirements for operating larger combination vehicles. Lastly, a Class M license is specific to motorcycles and is not applicable for combination vehicles. Therefore, Class A is the appropriate license for the operation of the specified combination vehicles in Texas.