Why Do Officers Tap The Rear of a Vehicle?

We often get messages sent through our contact form asking us questions relating to not only series, but also Policing in general. We received one the other day asking why officers tap the rear of a vehicle when approaching during a traffic stop and today we’ll explain why.

Leaving Evidence

Tapping the rear of the vehicle leaves a finger print of the officer. If a car flees, having the Officers finger print on the rear of the vehicle is a definitive way of proving that said vehicle was the one that fled. Of course these days we have dash cams and body cams and still Officers engage in the activity of tapping the rear of the vehicle. So what other reasons are there for doing so?

Spooking The Driver

It has also been said that it can be used as a method of spooking or startling the driver. If you’re rushing around hiding evidence and hear a tap on the rear of the car you’ll instinctively look to see what’s going on, thus delaying your attempt to hide evidence and increase your chances of being caught in the process!

So there you have it! Although rare these days thanks to body cams and dash cams,  if you see an Officer tap the rear of your vehicle don’t freak out. It’s probably habit or the Officers personal preference.


  1. HI first of all thankyou for this great show,I dont miss it at all,im getting told by my kids Im addicted to the show,well all police live shows,You are all great,and putting your lives on the line for us Thankyou,Could I ask why when stopping a car the driver is told to put hands out and then sometimes takes off,WHY ARE THEY NOT TOLD TO THROW KEYS OUT OF THE CAR WINDOW ,THEN YOU NOW THEY WILL NOT DRIVE OFF,
    It would be great if all police counties could do what the Japanese do,they PAINTBALL CARS SO WHEN THEY TAKE OFF ,THEY WOULD FIND IT HARD TO HIDE ,Also in shops the owners have an orange ball next to till so if they get robbed they fling the ball at perpetrator it bursts open and they are sprayed ORANGE,not so easy to hide from the POLICE,Would be great for you guys ,also make it easier to find them,WELL TAKE CARE BE SAFE WHERE EVER YOU GO,C

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