Mobile speed cameras that are announced on radio ... Besides, there are still quite a few fixed speed cameras in NL AND some "trajectcontrol" camera (as mentio

Mobile speed cameras that are announced on radio ... Besides, there are still quite a few fixed speed cameras in NL AND some "trajectcontrol" camera (as mentioned by a previous poster). I actually find the latter one the only one worth it, because then you are sure that people slow down for a longer period.