I commute on a DaHon folder, a bit over an hour round-trip. When I get up to speed I can plug along at 15 or 16 mph but with lights and stop signs, average is 14.0 best and 11.5 worst.

Rick / OCRR

PS: On a really good day, with a tail-wind, and hitting the lights on green, I can cruise at 19-20 mph. Those are also (no coincidence) the 14 mph average days!