Originally Posted by
mikhalit
On a derailleur equipped bike you can shift in the rear at the stop light almost as well. Shift the shifter, lock your front brake, lean a bit on the handlebars to raise the rear wheel and push on the pedal to rotate rear wheel and to let the chain move to the right sprocket. Pretty simple: shift, lock, lean, pedal.
That's pretty slick! Of course not necessary if you're on-the-ball enough to shift down
before arriving at the stoplight, but we all forget sometimes, right? I'm going to not shift down on purpose on my way home tonight to try that out!