what evidence can be found at road traffic accident sites where the police might be able to collect?

Question

in order to find the cause?

Answer 1

skid marks where they are meant to be able to determine speed at time of impact, breaking etc, from the length of the skid.

Also area's of where the debris is and starts from.

I am sure that there are more tho

Answer 2

Great answers above....

If the accident is minor an Officer may take measurements of yaw and skid marks to determine point of impact and how fast vehicles were traveling. Depending on how minor he may just take your statement. Most minor accidents are pretty easy to figure out.

If the accident is major on the other hand then they will call out an accident investigation team. Thats when the GPS measurements come out. Measure yaw and skid marks and debris. That information is plotted and made into a sketch of the accident. There are many ways to determine what happened. Mathematical equations and crumple affect on vehicles. Every car manufactured is placed in a database. The data tells us how fast a vehicle has to be going in order for a vehicle to be crunched a certain distance. This is just one way to determine speed at time of impact.

Answer 3

Debris scatter patterns, skid marks (there are many different kinds), chops and carves in the pavement, existance and operation of traffic control devices and roadway markings, paint transfer and other kinds of damage to objects and property at the scene.

If the vehicles have not been moved, their positions and the damage to the vehicles constitutes evidence. Likewise human injury and body placement.

The statements of the drivers and witnesses are also evidence, and are often at the scene of an accident.