Specifically, I was on a two way street that has three lanes in each direction. My particular move was to move past the second car in line who was signaling to go right, but who was blocked from doing so because of the car going straight at the head of the line. Because I was smaller and able to fit between the cars and the curb, I slipped past and turned right. Normally here, it isn't against the law to turn right on a red while passing a car at the head of the line waiting to go straight as long as there is room to do so safely. I guess my concern was that by bypassing another vehicle waiting to turn right simply because I was able to do so while he was stuck broke some sort of etiquette rule or something...