Speeding Cameras

[BrandonT858]

I am not sure if everyone is familiar with these cameras but essentially (at least where I live) the police park vans on the sidewalk and take pictures of speeders through a camera in the back window.

I was driving yesterday and spotted two of these vans posted up within a five mile radius. For some reason I feel this is a extreme violation of rights. We as tax payers pay for the roads and I feel that cops should not be able ticket citizens by posting up cameras in unsuspecting areas. I was wondering why as tax payers we do not get to Vote and decide whether or not we want cameras enforcing speed?