New Mexico CDL DMV Endorsement Double 1

To help avoid frustration, which can lead to aggressive driving behavior, you should begin a trip with realistic expectations about your travel time. Plan ahead to allow time for potential traffic delays. Other strategies to help prevent aggressive driving behavior include driving an appropriate speed and keeping a reasonable following distance; avoiding making gestures at other drivers; and keeping your hands on the steering wheel.

Your vehicle's stopping distance can be calculated by adding together your perception distance, your reaction distance, and your vehicle's braking distance. Reaction distance is the distance traveled between the moment you mentally perceive a hazard and the moment you physically hit the brakes.

Converter dollies built on or after March 1, 1998 are required to be equipped with anti-lock brakes.

Using a hand-held mobile telephone while operating a CMV is both illegal and dangerous.

When stopping, you should push the brake pedal down gradually. Braking gradually will help you to maintain proper control of your vehicle.

Never attempt to beat a train to a railroad crossing. It is very difficult to accurately judge the speed of an approaching train. If you come upon a crossing that is being approached by a train, you must stop and wait for the train to pass before you attempt to cross the tracks.

Incorrect coupling and uncoupling of combination vehicles can have extremely dangerous consequences.

You should not brake while making a quick turn to avoid a hazard. Doing so could cause your wheels to lock and make your vehicle skid out of control.

If you must stop on the side of the road, you must place the appropriate emergency warning devices within 10 minutes of stopping.

If a vehicle has anti-lock brakes on just one axle, the driver will still have more control during braking than they would without any anti-lock brakes.

Black ice is a thin layer of ice that is clear enough for the road surface to be seen through it. A road covered in black ice may look like it is merely wet instead of icy. Always be on the lookout for black ice if a road surface looks wet and temperatures are around the freezing mark.

When operating a double or triple, the shut-off valves at the rear of last trailer should be closed. All other shut-off valves should be open.

In heavy traffic, it is safest to travel at the same speed as other vehicles. If two vehicles continue to drive in the same direction at the same speed, they cannot hit each other.

When inspecting an exhaust system, you should verify that parts of the system are not loose, broken, or missing. The system's parts must be properly mounted and should not be rubbing against moving parts of the vehicle.

Skids happen when tires' traction with the road surface decreases. This can be caused by over-braking, over-accelerating, over-steering, and driving too fast.

A steering wheel should have no more than 10 degrees of play. This is equal to about two inches of movement at the rim of a 20-inch wheel. If there is more play than this, it may be difficult to steer.

The posted speed limit on a curve may be safe to be taken by cars, but can still be too fast to be taken by larger vehicles, such as trucks. An operator driving their truck at the posted limit on a curve could cause their vehicle to tip over.

Once you have begun to drive after a tire has been changed, you should stop after a short distance to recheck the tightness of the lug nuts.

In the event of an engine fire, turn off the engine as soon as possible. Do not open the hood if you can avoid doing so.

When performing a static leakage test on a double combination vehicle with air brakes, the leakage rate should be no more than 3 psi in one minute. If the air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.