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Signals Reports

• Signal Lighting Certification List (PDF, 07-16-2012)
• Pedestrian Countdown Indication - Market Research and Evaluation (PDF, 9 pages)
• Pedestrian Activated Solar Warning Flasher Test (PDF, 30 pages)
• Dark Signals - A Report on Laws Concerning Dark, Malfunctioning or Inoperative Traffic Signals (PDF, 31 pages)
• Traffic Signal Green Light Emitting Diode Study (PDF, 29 pages)
• Driver’s Understanding of Protected/Permitted Left-Turn Signal Displays - University of Massachusetts (PDF, 29 pages)