Not in CA you dont!
These newer cameras are really clear....and this system has video too. They just match your picture to your DMV photo if you decide to fight it.
What if the picture is unclear or glare is in it? I just wonder because in Texas we cite the person not the vehicle and it must be proved that you ( the suspect ) was driving at the time.
Analogy, police chase car. Car stops. Person flees into mall with hundreds of persons. Police cannot ID driver. Some time later owner arrives to claim car. Said he was called to come get it. Can you legally cite the owner? I think not.
it would be wrong to take a cotton ball with some vasaline on it and coat the lens of that camera. You can't do that to a cop now can you.