Do traffic cameras save lives or violate Due Process? Or do they do a little of both? Explain?

Technically, traffic cameras fulfill a preventive function by means of which drivers who commit infractions, such as exceeding the allowed speed, are identified by the police and deposed in their conduct, to avoid accidents that may damage citizens' health.

Now, traffic cameras are also a way of violating Due Process, as they produce evidence that has not been requested by the judge, and that can be used by prosecutors who investigate the crime without any type of legal opposition by the accused.