Older technology CF DVR Safety Vision ceiling-mounted camera for school bus pupil transportation wide-view
No camera cables are exposed, with the power harness routed directly into the bulkhead for less chance of tampering.
Installation should try to keep passenger & driver access to cables minimal to help prevent tampering.

In some applications, this is not as important as the drivers are operating on their own without passengers most of the time.

Example #1 - Forklift HD Industrial Operator Safety Camera Systems are only accessible by the skidloader or high-reach order picker operator themselves.

Example #2 - Waste Collection, Recycling Video Camera Surveillance Systems are often on vehicles where the driver is the only one on the truck.

Example #2 - 5th Wheel King Pin Trailer CS1 Spotter Terminal Yard Mule Camera systems affixed to the tractor that swaps the trailers in the yard, does not have passengers either, just the yard trailer swapper jockey.