1 / 20
A. Flat
B. Wide
C. High
Hauling liquids in tanks requires special skills because of the high center of gravity and liquid movement.
2 / 20
A. The truck will roll over
B. You will continue in a straight line and keep moving forward no matter how much you steer
C. Liquid surge will pull the tank from the truck
In a front-wheel skid, the front end tends to go in a straight line regardless of how much you turn the steering wheel.
3 / 20
A. 20 feet
B. 15 feet
C. 25 feet
The person watching the loading or unloading must: be alert, have a clear view of the cargo tank, be within 25 feet of the tank, know of the hazards of the materials involved, know the procedures to follow in an emergency, and be authorized to move the cargo tank and able to do so.
4 / 20
A. How fast the tanks drain
B. Liquid weight
C. Allowance for expansion of liquid
Liquids expand as they warm and you must leave room for the expanding liquid. This is called "outage."
5 / 20
A. Roll over
B. Suspension system failure
C. Over speeding
Side-to-side surge can cause a roll over.
6 / 20
A. Hauling milk or other food products
B. Starting or stopping
C. Loading or unloading
Un-baffled liquid tankers (sometimes called "smooth bore" tanks) have nothing inside to slow down the flow of the liquid. Therefore, forward-and back surge is very strong.
7 / 20
A. Front to back
B. Top to bottom
C. Side to side
The baffles help to control the forward and backward liquid surge. Side-to-side surge can still occur. This can cause a roll over.
8 / 20
A. There will be less front to back surge than there is in tanks without baffles
B. There will be slower surge that quick surge
C. There will be less side to side surge than there is in tanks without baffles
The baffles help to control the forward and backward liquid surge. Side-to-side surge can still occur. This can cause a roll over.
9 / 20
A. All answers are true
B. You need about two times as much stopping distance at 40 MPH as at 20 MPH
C. Wet roads can double stopping distance at any speed
Remember that wet roads double the normal stopping distance.
10 / 20
A. Much of the load's weight is carried high up off the road
B. Both of the above
C. Tankers can turn over at the speed limits posted for curves
High center of gravity means that much of the load's weight is carried high up off the road. This makes the vehicle top-heavy and easy to roll over. Liquid tankers are especially easy to roll over. Tests have shown that tankers can turn over at the speed limits posted for curves. Take highway curves and on ramp/off ramp curves well below the posted speeds
11 / 20
A. individual tanks over 119 gallons or a total of at least 1,000 gallons
B. individual tanks over 65 gallons or a total of at least 500 gallons
C. individual tanks over 225 gallons or a total of at least 2,400 gallons
A tank endorsement is required if your vehicle needs a Class A or B CDL and you want to haul a liquid or liquid gas in a tank or tanks having an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1000 gallons or more that is either permanently or temporarily attached to the vehicle or the chassis.
12 / 20
A. Before loading it, driving it, or unloading it
B. Before driving it
C. Before loading it or driving it
You should inspect a tank vehicle before loading it, driving it, or unloading it. This is to ensure that it is safe to carry out these activities and the vehicle can safely hold its liquid or gas contents.
13 / 20
A. Brake quickly to slow down and then brake quickly again to come to a full stop
B. Brake firmly
C. Keep a steady foot on the brake and don't release the brake too soon
Keep a steady pressure on the brakes. Do not release too soon when coming to a stop. Brake far in advance of a stop and increase your following distance.
14 / 20
A. If the liquid is likely to expand a lot
B. If the liquid is very dense
C. If it has to stay very clean
Un-baffled liquid tankers sometimes called "smooth bore" tanks have nothing inside to slow down the flow of the liquid. Un-baffled tanks are usually those that transport food products like milk. Sanitation regulations forbid the use of baffles because of the difficulty in cleaning the inside of the tank.
15 / 20
A. Never do it without downshifting first
B. If the wheels are skidding, you cannot control the vehicle
C. Disconnecting the steering axle brakes will help keep your vehicle in a straight line
If the wheels are skidding, you cannot control the vehicle.
16 / 20
A. you can use the parking brake before the brake pedal
B. your vehicle will stay in a straight line
C. you'll definitely lock the brakes
You should brake in a way that will keep your vehicle in a straight line and allow you to turn if it becomes necessary. You can use the "controlled braking" method or the "stab braking" method.
17 / 20
A. Emergency shut-off systems
B. All of the above
C. Vapor recovery kits
D. Grounding and bonding cables
If your vehicle has any of the following equipment, make sure it works: vapor recovery kits, grounding and bonding cables, emergency shut-off systems, or built in fire extinguisher.
18 / 20
A. The vehicles taillights should be kept on warning other drivers
B. You do not need to put out reflective triangles unless the vehicle will be stopped for 30 minutes or more
C. the rear reflective triangle should be moved back down the road to give adequate warning
If line of sight view is obstructed due to hill or curve, move the rear-most triangle to a point back down the road so warning is provided up to 500 feet.
19 / 20
A. Air to fuel ratio
B. Weight distribution
C. Water content
Some liquid tanks are divided into several smaller tanks by bulkheads. When loading and unloading the smaller tanks, the driver must pay attention to weight distribution. Don't put too much weight on the front or rear of the vehicle.
20 / 20
A. Distribution of weight
B. Air to fuel ratio
C. Water content
When loading and unloading the smaller tanks, the driver must pay attention to weight distribution. Don't put too much weight on the front or rear of the vehicle.
1 / 20
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