If you put your turn signal on while there is a vehicle in your blind spot the system will send an audible warning. (loebermotors.com)
Our research team is at the service of clubs interested in finding out more about the practical modalities of implementing a talent spotting system of this kind. (football-observatory.com)
Typically, blind - spot systems only work at speeds above 20 to 35 - ish mph. (cnet.com)