Well, there are a number of possible solutions to try and get folks to slow down. You can post a speed limit sign with a safe speed. But then again, the drivers who are speeding are likely to ignore a simple sign. You could put MPs out on the road to direct traffic. But that would be an inefficient use of manpower. Ohh, I know, this is the Army, we have a creative solution right at hand.
SOLUTION - Take two worn out tank treads and drag them across the road. Instant speed bumps! (The second one is down the road and barely visible in the picture.)
Cheers, Pearl