Spokes, the Lothian cycle campaign group, is exhorting cyclists to improve their road manners, smarten their image.
The group's Edinburgh cycling map spells out the new code:
* Jumping a red light and taking a shortcut along the pavement may be tempting, but you should remember that every time a motorist sees this happening it gives them the excuse to behave in a similar fashion.
* You are already riding the fastest vehicle on the city streets - why cause needless antagonism just to shave a few seconds off your journey?
* Try smiling or saying hello every time you ride past a pedestrian. Every time you do this it boosts the friendly image of cycling and helps to make up for the Lycra lout publicity.