What are you to do if you're unsure about whether you braked in time before slowly and possibly bumping into an individual's back bumper and that person drove away with no inclination of letting you know if that person's car was bumped or not? Basically you don't know whether you bumped into the back of that person's car, and you don't know if a police report is/was/should be filed. You assume that you stopped "on time." No damage shows on the front of your car.
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