LEDs versus Incandescent Bulbs

Lower energy consumption
• 1/10 power required
• Less heat generated
Faster illumination rate
• 200 milliseconds faster (19 ft at 65 mph)
• Usable for video display
Durability
• Single LED failure not catastrophic
• Orders of magnitude greater lifetime (~100,000 hr)
• Scheduled replacement not required
Color
• Single color signals most efficient
• White light from fluorescent excitation