'Green Phase' Traffic Signal is Great for Cyclists!
StreetFilms/Video screen capture
No Longer Stuck in the Middle, Waiting for Left Turns
I've said it again and again: To increase cycling as a main form of transportation, our roads need to be modified to make it safer and more convenient for people on bikes to get where they're going. This means physically separated bike lanes, safe bike storage/parking, and more bike-friendly traffic signalling. A good example of the latter is the 'green phase' signal used in Groningen, in the Netherlands (see the video below).
When the 'green phase' signal is on, cyclist from all junctions of the intersection can cross, in any direction, including diagonally.
Of course, you probably don't need to put this on every intersection. But all along a main bike lane/bike boulevard, it can make a big difference in safety and reduce an important bottleneck in the flow of cyclists.