Crazy traffic, Motorbikes, trucks and speeders

There's a 50 limit in the day and a 30 limit in the night but what is the point in putting sings up at all. This road is a drag racing strip. It's needs an average speed limit traffic camera that measures the time it takes for a car to go the length of the street, not just at a fixed point. Also, it should be 30 at all times. There's 2 Kitas, the park and thousands of people all living on a 3 lane race track. Make all the cars go slower and put in the infrastructure to enforce the speed limit.

2 years ago somebody managed to rip their car in half from going too fast and hitting a tree. Nothing has been done since then. This is madness.