MM3670, Lesson 1
column. Any entries in the Unsat column must be explained in the Remarks column. If a deficiency
detected during the inspection is corrected by the carrier, enter the corrective action taken in the
This is the way to inspect item by item:
1. Inspect the engine, body, cab, and chassis to make sure that they are clean. There should
not be excessive oil or grease.
2. Check the steering mechanism to make sure it is in good condition. It should not be bent or
broken or be leaking lubricant.
3. Check the horn. It should be mounted securely and be loud enough to serve its purpose.
4. Inspect the windshields for cracks and any defects that would make the vehicle unsafe.
Check the windshield wipers and the defroster to make sure that they are in good working
5. Check to see that there is at least one spare fuse for each kind of fuse installed or that the
vehicle has an overload circuit breaker.
6. Check the rear view mirrors. There must be one on each side of the vehicle. Make sure
they are properly positioned so the driver can see along both sides of the vehicle. Make
sure that the mirrors are not cracked or dirty.
7. Check the highway warning equipment. This equipment must include either three red
electric lanterns and two red flags or three red emergency reflectors (with stands strong
enough to keep the reflectors in the upright position) and two red flags. All warning
equipment must be in good condition. All flags must be at least 12 inches square.
8. Check for fire extinguishers. For off-post shipments
of DOT Class
A or B explosives, there
must be one Class 10 BC-rated portable fire extinguisher on the vehicle. For off-post
shipments of DOT Class C explosives, there must be one Class 5 BC-rated or two Class 4
BC-rated portable fire extinguishers on the vehicle. For on-post shipments, there must be at
least two Class 1 BC-rated portable fire extinguishers. One must be mounted outside the
cab on the driver's side, and one must be mounted inside the cab.
9. Check all lights, light switches, and reflectors, including the clearance lights (on top
trailer), turn signals, and reflectors. High and low beams and emergency flashers on both
front and rear must work properly. Make sure that lights, signals, and reflectors are free of
dirt and grease and that there are no broken lenses.
Item 10. Check the front end
of the exhaust pipe
to make sure
it is securely attached
to the exhaust
manifold and that there is no evidence of leakage. Check the back end of the exhaust pipe
to make sure it is