The most frustrating thing about commuting by bike
 

For me it is the inability to trigger traffic lights. In a couple of different areas I have to work into a left turn lane that isn't used frequently. There is however enough traffic in other directions to preclude my just running the light. So, at least once each way I have to sit through 2 or 3 light cycles until somebody pulls up behind me. :mad:

Our traffic is light enough that I can run the light.