The idea
Currently if you are 'caught' speeding you are not allowed to see the evidence against you unless you wish to plead not guilty. i.e. go to court.
The photo evidence that the police have should as a matter of course be sent to you with the letter. The reason why this is important is that often speed cameras especially hand held ones can be 'timedout' i.e. the speed they show is the previous cars speed. I have challenged this and won on more than one occasion.
I find it offensive that i can not see the evidence against me unless i challenge the accusation. This is not a police state. They work for US.
Why is it important?
This is important as at present this leaves the citizen disempowered and disadvantaged in comparison to the police. The onus should not be on the citizen to prove their innocents, if there is evidence it should be shown.