Knowledge Test Class B #1
Class B Driving Test | New Hampshire 2026 #1 Page 5 of 7
Train for FREE online with our New Hampshire class B license test. 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 NH CDL class B permit 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 CDL class B requirements may vary from state to state.
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29 . What is the minimum permitted size of a placard?
32 square inches
Hazardous materials must be diamond-shaped and a size of at least 10 ¾ square inches.
30 . In an emergency, if you must leave the roadway to drive on the shoulder, you should:
Stay on the shoulder until the next exit.
If a hazard requires you to drive onto the shoulder of a road, you should try to keep one set of wheels on the pavement to maintain better control of your vehicle. If possible, stay on the shoulder until your vehicle has come to a complete stop, then pull back onto the road when it is safe to do so.
31 . On any upgrade, gravity will:
Cause your vehicle to swerve to the left.
When driving uphill, you are fighting the force of gravity, which will slow down your vehicle.
32 . What do headers do?
Act as wind guards
Front-end header boards protect the driver from the forward motion of their cargo in the event of a crash or emergency stop.
33 . A danger of a large truck swerving to avoid a hazard is:
Other vehicles may do the same thing.
Swerving out of the way of a hazard is sometimes safer than trying to stop before reaching the hazard. You can usually turn away from something more quickly than you can come to a complete stop. However, swerving while in a vehicle that is either top-heavy or pulling multiple trailers may result in a rollover.
34 . The front of an enclosed trailer should:
Be free of cracks.
