Due to population growth spurts in recent years, construction of more red lights at specific intersections have been on the rise. What was once a 4-way stop has now become a full on traffic light controlled intersection. These are put into place to make the flow of traffic more efficient since 4-way stops, or blinking yellow lights can sometimes be inefficient in getting the traffic to move in a flowing fashion.
The problem is some motorists forget this especially if they are in a hurry. They tend to "speed up" when they say a yellow light instead of slowing the speed of their vehicle to a stop. Or, they will actually speed on through a red light long after the light has turned red - known as a "red light run." Most motorists who do this will tell you they "were in a hurry" but it translates into failure to take responsibility. You cannot trade other drivers safety for the importance of being on time somewhere. Some red light runners do this due to other factors like simply not paying attention or daydreaming while driving. Or, they run the red light because they were distracted by something while driving. Either way, choosing to run a red light, or not seeing a red light can spell disaster to both the red light runner and the other vehicle who crashes due to the act happening at all.