Because it allows him to know through the occurrence of the accident. Companies require the acceptance of the claim admissible.

Drafting of an incident in the event that a collision has occurred with other vehicles. You must be signed by the insured and the opposite in his case, clearly indicating the number of data policy, vehicle registration, driver identification and completed the central part of circumstances of the collision.

If your policy has contracted the service of travel assistance or have travel insurance policy, remember that it must resort to the use of crane or any other right guaranteed by these policies, otherwise there are problems when recovering invoices for the same services.

COMPLAINT (copy)
To the competent authority and only in the event of a theft or plunder:
Theft: Theft of vehicle in things hard (eg broken door)
Plunder: Abduction of the vehicle with power to people (eg robbery)

BILLS (copy)
Because it justifies the amount of damage is consistent with the actual loss suffered by the injured without any profit on their part.
Only in cases of theft or looting of objects secured to the remaining claims repair estimate of damage.
Expertise
With the communication of the incident, clearly indicates:
Repairer
Address
Phone
Date on which has to be supervised (with room for 48 hours minimum)