[DigitalJack]

It is hard to tell from the photo, but it looks like the the turn signal indication is the standard "blink on the side" style. When the lights are close together like they are with this design (as is practical for bikes), it's very hard to distinguish which side is blinking from even a short distance.

Could I suggest that instead of blinking on one side or the other, you turn the lights on in sequence heading toward the direction of the turn? For example, for a turn, you could illuminate light #1, then #1 and #2, then #1 and #2 and #3, then off and repeat.

That seems to me a much clearer indication of intention from the point of view of a vehicle some distance away looking through less than clean glass.

[mercuryrising]

Definitely possible, thanks for the suggestion. I'll consider it and do a visibility test.

There's 5 LEDs on the back - three reds and two amber turn signals. When blinking, the center red LED stays solid to provide a reference for the turn signal.