When patrolling, I always drop both front windows about 2-3 inches. That way, I can still hear audible noises outside the unit--screams for help, etc.--and not be afraid that if my unit was approached, someone could reach an adult size hand into my cab. Also, I always drive with my left hand on the steering wheel and my right hand on my seatbelt release button to reduce the time needed to engage or bail from my vehicle.