Now, this is a feature; we Indians are very thankful for. Parking in tight spaces is now a bliss, all thanks to the Parking Sensors. If you have wondered how this marvel of technology works, you’re in the right place. These sensors allow you to reverse your vehicle out of a driveway or parking space with more confidence and in general, makes driving in reverse safer. With the increasing overall dimensions of cars and shrinking parking spaces, these sensors are gaining rapid popularity sensors are proximity sensors which alarm the driver when the vehicle gets close to an object.

these sensors have been widely used for some time now, mounted most commonly on the rear bumper for reverse assistance and the front bumper from forward-clearance in some cars. Sensors are featured in many different cars under different brand names, such as Park Distance Control, Park Assist, Parktronic, EPS, Smart Assist, or Smart Park. But, in theory, they all work in the same manner.

GoMechanic | Parking Sensors

Advantages of Parking Sensors:

  1. With the ever-shrinking parking spaces, the sensors help in reducing blind spots around the vehicle eases the arduous task of parking in narrow areas
  2. They reduce driver fatigue while parking a car
  3. They reduce the chances of damage a to a car or other nearby objects.
  4. Increases drive’s confidence

These are the two most popular types of parking sensors:

  1. Ultrasonic Parking Sensors
  2. Electromagnetic Parking Sensors

Ultrasonic Parking Sensors

The Ultrasonic sensors use high-frequency sound waves to detect objects. These sensors emit sound pulses that reflect off of nearby objects. A receiver detects the reflected waves and calculates the distance from your vehicle to the object.  As ultrasonic system use sound waves, they can suffer from interference and are also not that useful on small, narrow objects such as poles. They are also affected by rain and wind. Also, since an ultrasonic system works by using individual sensors mounted on the car’s bumper, dirt, mud grime can cause the system to fail.

Electromagnetic Parking Sensors

This type of parking sensor uses Electromagnetic frequencies to detect nearby objects. Electromagnetic Parking Sensors can detect more types of objects without the same limitations of ultrasonic proximity sensors as they function in the wide range of wavelengths on the electromagnetic spectrum. Electromagnetic sensors can also be paired with a camera to help drivers better visualise their car and the space around it. As opposed to ultrasonic sensors that are mounted onto the bumpers, Electromagnetic Sensors are mounted inside the bumper. Hence, there is no issue with dirt interfering with the system’s detection capability. Another plus point with EPS is that they are discreet.

Parking Assist

GoMechanic | Parking Sensors


One of the most intelligent parking systems of the time (thanks to technology) is known as park assist. This is about as close to a fully automated parking system. Park assist is employed as a feature in various high-end cars. Combining the cameras and sensors, park assist systems can find and judge the size of a parking space, and with the driver controlling the speed, it can steer its way into it. Most of these systems are now capable of both reverse and parallel parking manoeuvres.

Tips for using Parking Sensor:

  • Although, quite a feat in technology, one should not wholly rely on these sensors. They may not detect objects that are flat on the ground, below the bumper, too close to the car, or too far from it.
  • Always make sure that the sensors are clear of any debris like dirt or grime that may obstruct the detection
  • Stay aware of your surroundings while parking, including people or objects that may enter the parking path.

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