Please contact the traffic police to the car number to find the owner and to obtain other necessary information. You will be given a special form which must be completed and handed to the officers. You must have a good reason to receive such confidential information, otherwise your appeal will be ignored. The main reason to get the right information is, of course, an accident. This can be attributed to various administrative and criminal offences committed by the driver.
Try to find out the owner based on the number of machines via the Internet. There are many special resources either for free or for money to obtain the necessary information. Refer only to credible sources, as many sites are fraudulent and you will only lose time and money. Popular and absolutely free resource is http://www.nomer.org/mosgibdd/, which contains a database of car numbers in different regions.
Look at the number on the car owner through any of the Internet search engines. Perhaps this driver has violated traffic rules, and the number is on one of the sites. Also, it can "appear" in one of the electronic databases or social networks.
Ask for help to your friends and acquaintances. Maybe someone of them is known to the offender or just the person who owns the car. If the city is small, your chances of success will increase significantly. Also if you noticed this car in any areas – in Parking lots, stores or office buildings, please contact with the staff working there. Staff can help you find out the owner.