4. Communications: electrical
  5. Traffic control indicator
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Backup traffic signal management system and method

Communications: electrical – Traffic control indicator – Traffic control or local controller failure indicator
Patent

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Barricade light with light emitting diode

Communications: electrical – Traffic control indicator – Portable
Patent

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Battery operated safety strobe barricade

Communications: electrical – Traffic control indicator – Portable
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Bimodal replacement traffic light

Communications: electrical – Traffic control indicator
Reexamination Certificate

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Blackout backup for traffic light

Communications: electrical – Traffic control indicator
Patent

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Block signal and train proximity detector

Communications: electrical – Traffic control indicator – Intersection normally under local controller
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0
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