Why rolling through a red light is so dangerous
When people are in a hurry, they often roll through a red light to make a right-hand turn. They know that they're allowed to turn right on red if there is no other traffic. Instead of coming to a complete stop and then proceeding, though, they just roll toward the light and look for other traffic as the car keeps moving.
This is dangerous on many levels. For instance, imagine that it goes like this:
The drive comes to the red light. They slow down and start rolling around the corner. They think that they only have to check to the left to see if there is any other traffic coming toward them. They turn their head to look. The car is moving the whole time. They don't see any cars close enough to pose a problem, so they look back to the right. That's when they see the pedestrian or the cyclist that they never saw before.
The risk is that you have to think about more than just other cars when you turn through a red light. Trying to do it quickly, without actually stopping, overwhelms your senses. It does not give you enough time to actually see what may be in your way or if it's safe to turn. It can lead directly to a serious car accident.
Now you know that you should never roll through a red light, but that doesn't mean another driver won't do it anyway. If you get injured in a crash, make sure you are well aware of the legal rights you have to compensation.