As others have pointed out, the arms not moving shouldn't prevent the vehicle from braking. There are a number of reasons a person's arms may not move as expec

As others have pointed out, the arms not moving shouldn't prevent the vehicle from braking. There are a number of reasons a person's arms may not move as expected, a couple of primary ones being the person is holding an object or has hands in pockets. And of course, some people don't have arms, and they shouldn't be left out either.