You're a good person with noble motivations -- you ride a bicycle instead of driving because it's healthy and it doesn't have a disastrously negative impact on the environment. We salute you, but not all of society appreciates your virtue like we do. In a sinister and systematic oppression of cyclists (we're absolutely certain it's intentional), many traffic lights are governed by sensors in the pavement that give a green light only after they've detected the change in inductance when a large metal car pulls up. Before you take up arms, though, take a look at this recently-patented device that sends out a signal that fools the sensors so cyclists don't have to wait for a car to unwittingly play good Samaritan -- we suppose we'll try this out just in case before we incite a violent revolution.
Appears a bit unwieldy to me......but it's a start.....