Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 24, 2019
Patent Application Number
16131725
Date Filed
September 14, 2018
Patent Citations Received
Patent Primary Examiner
Patent abstract
A retrofit trailer board system for vehicles is disclosed, including a trailer board carrying a plurality of signalling lights on a surface thereof, and a relaying control unit which is connected between the trailer board and a plurality of optical sensors. Each optical sensor is arranged for removable connection to the exterior surface of respective vehicle lights, each sensor being configured to issue a signal responsive to operation of a vehicle light.
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