You don't even have to 'allow' them. Either you could live in a community property state, where your spouse, even a spouse who has initiated divorce against you, legally also owns the vehicle that is in your name. Or someone could steal it. Or someone could steal or duplicate your plates and put it on a nearly identical car, which happened to a friend who had to spend years fighting all the tickets that were mailed to him when an entirely different car (same make/model) used his same plate numbers.
Easy:
1. Allow someone else to drive your vehicle
2. That person runs a red light
Your responsibility as the vehicle owner is to either not do step 1, or only do it for people whom you trust will not do step 2.
You don't even have to 'allow' them. Either you could live in a community property state, where your spouse, even a spouse who has initiated divorce against you, legally also owns the vehicle that is in your name. Or someone could steal it. Or someone could steal or duplicate your plates and put it on a nearly identical car, which happened to a friend who had to spend years fighting all the tickets that were mailed to him when an entirely different car (same make/model) used his same plate numbers.