During a routine traffic stop, where should the traffic officer position themselves relative to the stopped vehicle while speaking to the driver, to maintain a tactical safety advantage?

1. Directly in front of the vehicle's bonnet (hood).
2. Slightly behind the driver's door (at the B-pillar), preventing the driver from easily reaching the officer or opening the door into them.
3. Leaning through the open passenger window.
4. Standing behind the exhaust pipe.