Join Date: Nov 2003
Location: Toronto, Ontario
Bikes: True North tourer (www.truenorthcycles.com), 2004; Miyata 1000, 1985
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An electronic turn signal is no substitute for hand signals. Drivers are not used to seeing flashing LED turn signals on a bicycle, so the lights may not even register in the minds of drivers. The meanings of hand signals are fairly unambiguous and well-understood. Hand signals are also more likely to be seen — and noticed — from different angles.
Electronic turn signals may be somewhat useful at night, but flashing LEDs without turn signals already do a good job of this. The purpose of lights on a bike is to draw attention at night. Simple, inexpensive, flashing LEDs do this in a way that drivers, other cyclists, and pedestrians already understand.