Instructions

Double

This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice.. Read More

This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Each question has three or four possible answer choices. Test questions come from the Connecticut Commercial Driver License Manual. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.

Number of Question 20

Passing Score 16

1. If a trailer begins to skid, it is best for the driver to:

Release the brakes.

Accelerate.

Quickly turn the steering wheel in one direction, then in the other.

If your trailer begins to skid, you should release the brakes to regain traction. The trailer will begin to straighten out once the wheels begin to grip the road again.

2. During a pre-trip inspection, what is the best method for checking your lights?

Parking near a mirror to look for a reflection

Activating the lights, then exiting the vehicle to check

Looking on the instrument panel to see if any warning lights are illuminated

Driving in traffic and waiting for other drivers to let you know your lights are out

During a pre-trip inspection, you should activate your lights, then get out of the vehicle to look at them.

3. When entering traffic, the driver of a double or triple needs to be aware that doubles and triples:

Need more space to merge into traffic than smaller vehicles.

Are exempt from most speed limits.

Are difficult for other drivers to see.

Are not permitted on interstates.

Doubles and triples need more space than other vehicles, both because they are longer and because their size and weight prevent them from turning or stopping suddenly. When driving a double or triple, always make sure you have enough space before entering traffic, crossing traffic, or changing lanes.

4. Alcohol is removed from the body:

By exercising.

At a fixed rate.

More quickly if the person stays awake.

The liver removes alcohol from the body at a fixed rate. Despite popular belief, tricks like drinking coffee or taking a cold shower will not speed up the process. The only way to become sober is to allow your body the time it needs to remove the alcohol from your system.

5. When making a lane change, your turn signal:

Should always be used.

Should only be used if there is traffic present.

Should only be used between dusk and dawn.

You must always properly signal before turning or changing lanes.

6. Do not base your decision to shift gears on:

The speed of your engine (rpm).

The speed of the road (mph).

The actions of the vehicle next to you.

One way to know when it is time to shift gears is to learn your vehicle's operating rpm range. You should shift up when your engine reaches the top of that range. You can also learn which speeds each gear is good for and shift up based on your speedometer.