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Blind spot monitor
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<p>The blind spot monitor or blind-spot monitoring is a vehicle-based <a href="/facts/Sensor/RN8SXbjs">sensor</a> device that detects other vehicles located to the driver’s side and rear. Warnings can be <a href="/facts/Visual/QVcuA27K">visual</a>, audible, <a href="/facts/Vibrating/6vSrm84a">vibrating</a>, or <a href="/facts/Touch/0nhRsBnt">tactile</a>. </p><p><a href="/facts/Vehicle_blind_spot/oBJ1lcpE">Blind spot</a> monitors may do more than monitor the sides and rear of the vehicle. They may also include "Rear Cross-Traffic Alert", "which alerts drivers backing out of a parking space when traffic is approaching from the sides." </p>