FREE Iowa CDL Practice Test 2024 - DMV Practice Test Page 3 of 7

Practice examinations are a great opportunity to brush up on the regulations, road rules, driving skills, and other things you'll need to be a safe CMV driver. These 50 multiple-choice questions, along with hints and explanations, will help you prepare for the CDL written exam in Iowa by providing information and practice questions based on the Iowa Commercial Driver License Manual, as well as federal and state.. Read More

Practice examinations are a great opportunity to brush up on the regulations, road rules, driving skills, and other things you'll need to be a safe CMV driver. These 50 multiple-choice questions, along with hints and explanations, will help you prepare for the CDL written exam in Iowa by providing information and practice questions based on the Iowa Commercial Driver License Manual, as well as federal and state legislation. Practice until you achieve the desired result.

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15 . When starting from a complete stop, a vehicle should:

To avoid hitting vehicles behind you, you must ensure that your vehicle will not roll backward when you start moving forward from a stopped position.

16 . A driver with a minimum blood alcohol content (BAC) of ____ or more will have their CDL disqualified for at least one year.

0.12 percent. A first conviction of operating a CMV with a blood alcohol content (BAC) of 0.04 percent or higher will result in the loss of your CDL for one year. A second conviction of operating a CMV with a minimum BAC of 0.04 percent will result in the loss of your CDL for life.

17 . Within 10 minutes of stopping on the side of the road, you must:

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

18 . Off-ramps:

On- and off-ramps can be dangerous when driving a truck. Remember that posted speed limits for ramps may be safe for cars but too fast for trucks.

19 . While driving, gauges are:

While driving, you should watch your vehicle's gauges for signs of trouble. Be sure to inspect your gauges before beginning a trip to ensure that they are in proper working order.

20 . When leaving your vehicle:

Parking brakes should be used whenever you park. If necessary, chock your wheels.

21 . How many daily hours of sleep does an adult need to maintain alertness?

Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need eight to nine hours of sleep per night.

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