Tank #2
Tank Endorsement Test | Illinois 2026 #2 Page 3 of 3
Train for FREE with our Illinois tank endorsement practice test online. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a IL tank license in 2026, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a CDL tank vehicle endorsement may vary from state to state.
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15 . If colors are being used to distinguish glad hands, which color is used for emergency lines?
Red
When trailer air lines are color-coded, the service lines are generally blue and the emergency lines are generally red.
16 . If a load is placed on one side of a trailer, the trailer:
Have improved steering.
If the weight of a load is placed primarily one side of a trailer, the trailer may lean, increasing the risk of a rollover.
17 . The trailer hand valve should be used:
Only if the trailer is carrying a load.
The trailer hand valve should be used only to test the trailer brakes. It should not be used while driving because it may cause the trailer to skid.
18 . When a combination vehicle goes around a corner:
It is acceptable for street signs to be knocked over if they are too close to the road.
When a vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is called off-tracking. This effect is especially pronounced on vehicles with trailers.
19 . When the wheels of a trailer lock up:
They will likely go flat.
A trailer may swing out and strike other vehicles if its wheels lock up. This is especially likely with lightly-loaded trailers.
20 . If you identify a distracted driver on the road, you should:
Flash your lights at them.
