Excellent to let people know when they need to slow down or not try to run an intersection. The presence of cops in traffic causes congestion and wastes my time and money (my job has me on the road more than the average individual). I also like the radar mode which actually alerts you to the presence of the various hazards. Hopefully this app will improve road safety. Because we know roadblocks, red light cameras and radar traps are about improving road safety! My thanks to the developer!