Trucks turning — New Hampshire Permit Test
Trucks turning on the New Hampshire permit test — 8 rules, each with the reason behind it and a question on it while it is fresh.
The rules
When a truck or bus needs to make a right turn it may need to swing wide to the left in order to safely turn right and clear the corner.
A long vehicle turning tightly would put its trailer over the curb, so the wide swing is how it stays on the road.
When a truck or bus needs to make a right turn, they may need to swing wide to the left in order to safely turn right and clear the corner of a curb or other obstruction.
A driver who tries to get in between a turning truck or bus and the curb will be squeezed between them and could suffer a serious crash.
The gap that opens as a truck swings wide is the space the trailer is about to come back into.
If a driver tries to get in between the truck or bus and the curb, the vehicle will be squeezed in between them and could suffer a serious crash.
To avoid a crash a driver should not turn until a truck or bus has completed its turn.
Waiting costs a few seconds. Guessing where the trailer will end up costs the side of your car.
To avoid a crash, do not turn until the truck or bus has completed its turn.
When meeting a truck coming from the opposite direction a driver should keep as far as possible to the right side of the roadway.
It avoids a sideswipe and reduces the wind turbulence between the two vehicles, which pushes them apart.
keep as far as possible to the right side of the roadway to avoid a sideswept crash and to reduce the wind turbulence between the two vehicles, which pushes the vehicles apart.
Many collisions with large vehicles occur at intersections because motorists cannot accurately judge the speed of a truck approaching before making a left turn.
A large object looks slower than it is moving, so the gap a driver thinks they have is not there.
motorists are unable to judge accurately the speed of a truck
When in doubt about the speed of an oncoming truck or bus, a driver should not turn left in its path.
A truck takes longer to stop than a car, so being wrong about the gap is far more expensive.
When in doubt about the speed of an oncoming truck or bus, do not turn left in its path.
Stop lines at intersections set a vehicle farther back to give larger vehicles more turning space, and a driver should always stop behind them.
The space in front of the stop line is where a trailer swings through, which is why stopping past it is dangerous.
These stop lines help to set a vehicle farther back at an intersection to give larger vehicles more turning space.
A driver should not cut off a large vehicle in traffic or on the highway to reach an exit or beat a truck into a single-lane construction zone.
Cutting in front takes away the stopping distance the truck had been keeping, and that distance is not yours to take.
Do not cut off a large vehicle in traffic or on the highway to reach an exit or turn or to beat a truck into a single-lane construction zone.
On the test
Why does a truck swing wide to the left before turning right?
To clear the corner of a curb or other obstruction. A long vehicle turning tightly would put its trailer over the curb, so the wide swing is how it stays on the road. New Hampshire Driver's Manual, p.39: “When a truck or bus needs to make a right turn, they may need to swing wide to the left in order to safely turn right and clear the corner of a curb or other obstruction.”
How this works
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Where these come from
Every rule here is checked against New Hampshire Driver's Manual, published by the New Hampshire Division of Motor Vehicles, and against the state code itself. Last checked 2026-09-16.
- src/assets/drivers-manuals/NH.pdf (New Hampshire Driver's Manual, Rev. 11/25, New Hampshire Division of Motor Vehicles, retrieved 2026-09-14)
- src/assets/drivers-manuals/NH.pages.txt (plain pdftotext over that PDF; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SOURCES.json (sha256, folio offset 6, folioMarker, nonLawPages, signGalleryPages and the extraction flag, each with its basis)