Texas CDL Special Requirements Practice Test

When driving a tanker, where is the liquid surge most critical?

If you are transporting hazardous materials, where must the shipping papers be kept?

What is the primary purpose of placards on a vehicle carrying hazardous materials?

What does a hazmat «»identification number»» indicate?

When transporting hazardous materials, what is the «»Emergency Response Guidebook (ERG)»» used for?

Who is responsible for correctly labeling, marking, and placarding a hazardous materials shipment?

When carrying passengers, how far away from a railroad crossing must you stop?

When transporting passengers, what is your primary responsibility?

Before allowing passengers to board, what should you inspect on a passenger vehicle?

What is the maximum number of passengers a CDL Class C driver can transport without a «»P»» endorsement in Texas?

When picking up or dropping off passengers, what must you ensure for their safety?

If you need to evacuate passengers from a bus, what is the best procedure?

What is a «»converter dolly»» used for in doubles/triples operations?

Which trailer is most likely to «»crack the whip»» and roll over in a set of doubles or triples?

When inspecting a converter dolly, what is critical to check regarding the pintle hook?

What is the function of the shut-off valves on the rear of a trailer (in a multiple trailer combination)?

If you are operating a double or triple combination, how should you negotiate turns or curves?

Why is it important to prevent «»slack»» in the drawbar or hitch between trailers?

What is the maximum number of trailers a commercial motor vehicle can pull in Texas?

What is the purpose of «»spring brakes»» in an air brake system?

When should you drain the air tanks in an air brake system?

What does a «»low air pressure warning»» signal (light/buzzer) in an air brake system indicate?

How do you test the service brakes in an air brake system?

What is «»brake fade»» and what causes it?

What is the recommended method for using brakes on a long, steep downgrade with an air brake system?

What is the effect of an alcohol evaporator in an air brake system?

What is the minimum air pressure required for the governor to cut-in and begin pumping air into the tanks?

What is the maximum air pressure at which the governor should cut-out (stop pumping air)?

What is the primary hazard of a «»runaway»» trailer?

If your vehicle is equipped with air brakes, how do you perform a «»static air loss»» test?

What should you do before disconnecting the air lines when uncoupling a trailer?

When coupling a tractor to a semi-trailer, what is the correct sequence after backing under the trailer?

How do you test the «»tractor protection valve»» during a pre-trip inspection?

What is required on all motor vehicles, trailers, and semitrailers for nighttime visibility in Texas?

What must be done with loose material (e.g., sand, gravel) when transported in a commercial vehicle in Texas?

What is the maximum allowed width of a load that is capable of being reduced in width, in Texas?

What is the purpose of the «»Bridge Formula»» in CDL regulations?

What does a CDL «»endorsement»» signify?

What is the fine for operating a commercial vehicle without the required CDL or endorsement in Texas?

What are «»placarding requirements»» for hazardous materials?

When are you not required to placard a vehicle carrying hazardous materials?

What is the significance of the «»transport index»» on a package of radioactive material?

What is the purpose of «»outage»» when loading a tank vehicle?

What is the primary concern when parking a tank vehicle?

When should you perform a post-trip inspection of your commercial vehicle?

What is a common cause of serious accidents involving commercial vehicles at intersections?

What is the most common reason for vehicle breakdowns related to the electrical system?