CAR DRIVER CAN NOW FLASH SIGN FOR HELP (Oct, 1934)

CAR DRIVER CAN NOW FLASH SIGN FOR HELP
Attacked by hold-up men or kidnapers while in his car, a driver using a Detroit inventor’s new alarm signal may appeal to police or passing motorists for help. The signal is lettered with the word “Help.” When not required, it folds up out of sight. When danger threatens, the driver pushes a button and the signal drops down into plain view.

2 comments
  1. blast says: November 18, 20077:28 pm

    Indistinguishable from a prank sign, and if it had ever caught on, most sightings probably would have been prank signs…

  2. Orv says: November 19, 20071:19 pm

    Schemes along these lines have been proposed for cab drivers.

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