“Highway checkpoints to sell safety equipment like reflectors”

The idea is simple – there are 2 checkpoints on the highway. The first checkpoint jots down all vehicle numbers as they pass. As they pass, the attendant flashes a light on the rear of the vehicle to see if it has a sufficient quantity of working safety gear (like reflectors or intact tail lights). If not, he passes that information on to the next checkpoint, where the second attendant flags down only those vehicles that have been identified at the first checkpoint for missing safety gear. Apart from fining these vehicles, the second checkpoint also has safety equipment like reflectors that can be sold to these errant vehicle drivers, and can even be installed on the spot.