Not unless it is done with the permission of the other property owner(s) that share ownership and use of the road.
A slow speed limit cannot be enforced on a private road in the state of Virginia. You can put a sign up but is will not be enforced by the state.
Every car slows down for speed bumps... that's what speed bumps are for.
A private investigator is more likely to speed up an investigation than a police department when it comes to a case. The private investigator will hand over the information to the police department so that an arrest can be made in the case of a crime. An investigative officer will enforce the case.
Depends on who administers the road. If it's a private road, the speed limit will be whatever the owner of the road determines it to be. In most instances of gravel roads not being private roads, they'll typically be county roads, and the county will have the jurisdiction to determine the speed limit.
he invented speed bumps
It depends entirely on the speed of the jet.
Excessive speed.
Excessive speed.
The average aircraft can go 600 miles per hour.
Excessive speed.
The slowest I've ever seen was 5 MPH, but this was on private property.
130 Knots (150mph)