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What Is a Vehicle Speed Sensor?

by Amanda Davis

Vehicles are equipped with a variety of devices that function together to help the automobile run smoothly. One of the most important components is the vehicle speed sensor.


As the name implies, the function of a speed sensor is to collect information on how fast the vehicle is traveling. The speed sensor gathers this information by recording the rate at which the crankshaft is spinning.


Speed sensors help with anti-lock braking systems. The sensor gives information to the braking system that allows it to determine the amount of pressure to apply to keep the car from skidding and slipping while braking.


Speed sensors vary between car makes and models. In the event that a speed sensor needs to be replaced, it is best to consult the vehicle manual or a service professional.

About the Author

Amanda Davis began writing in 2010 with work published on various websites. Davis is a dietetic technician, registered, personal trainer and fitness instructor. She has experience working with a variety of ages, fitness levels and medical conditions. She holds a dual Bachelor of Science in exercise science and nutrition from Appalachian State University and is working toward her master's degree in public health. Davis will be a registry eligible dietitian in May 2015.

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