Parking Sensors Available here. Parking sensors are handy for almost everyone. However, if you drive a larger vehicle, these sensors are nearly essential. They use proximity sensing technology to measure the distance of the sensor pickup from all types of obstructions, alerting you when you get too close. The effect is that you have a way to detect objects in your blind spots, without sending your loved ones outside of your vehicle to flag you into your parking spot. Don't worry if your vehicle doesn't have these. Most bumpers have spots where parking sensors can be mounted, and either you or your mechanic can install the parts quite easily. Upgrade your safety or replace your broken sensor with any of these quality options.