[1Old Pro]

For all the cop knew, the driver could be lying or intending some form of mischief or simply be putting others in danger.

Yep, lots of Hamas terrorists with bomb vests breaking the line to go golf.

[Rockingham]

The danger comes in the form of human nature, with about 4 or 5 percent of the population having antisocial personality disorder, meaning sociopaths and psychopaths. Add in drunks, other substance abusers, hotheads, criminals on the run, and schemers, and the total rate of trouble makers is probably one in ten.

In any event, traffic control is one of the riskiest things that police do. In one form or another, the best advice to dealing with police is CPR: be Compliant, Polite, and Respectful.