Yes, contact the police immediately if you or someone else was injured or killed in an accident. Police will immediately investigate the scene of the accident, take statements of witnesses, and will examine the other driver to check for drug or alcohol use. They will create an official accident report, which your Los Angeles personal injury attorney can use in your claim for compensation.
The police can also be valuable witnesses to your injury at the scene, and they can assist in securing an admission of fault from the negligent driver.