Let's say you are driving along at night and notice a car following you that attracts you attention for whatever reason. What steps do you go through in a) attempting to identify the vehicle b) determining if they are following you?
Now since I tend to speed a lot I always keep a look out for cops. The city I work in is the state capital and has multiple state police posts, head quarters, training centers, labs...ects so there are always marked and unmarked cops on the road. Most cops are, even unmarked cars, are fairly easily to spot due to the way they drive and the styling of the vehicle. When it's dark and I first get on the highway I always check my 6, got a ticket once because I didn't do that and stomped on it with an unmarked car right behind me. Now at night you have a cars headlights glaring in your mirrors so it's difficult to tell exactly who is behind you so I use the review on the dim setting to look at the size and shape of the headlights and parking lights. The crown vic parking lights give the vehicle away. Also if you slow down and let a vehicle get behind the vehicle that is following you the headlights of that vehicle will light up the interior and let you see how many people are inside the vehicle following you.
Now if you want to get the license plate of the vehicle behind you, if you are on the interstate you can try this, get in the left lane and go near the speed limit, wait for another vehicle to end up behind the car following you, then jump into the right lane and hit the brakes. Your suddent movement and braking combined with the car behind the car following you will force the car to pass you, now you have their plate. If you are on a side street, find a parking lot with two entrances close to each other most grocery stores, gas stations, and office buildings have this. Pull in, drive through the parking lot, go out the other exit, step on it and circle back into the first entrance, now the person following you is on the road in front of you and you can get their plate.
The worst way to attempt to get a license plate would be to stop your vehicle at a dead end road and walk towards the front of the other vehicle while their lights are on as they could have no front license plate and could back away from you.
So what are some other tricks for IDing who is behind you without getting out of your vehicle or otherwise putting yourself in a dangerous spot?