Careful driving requires appropriate reaction time, both simple and complex. braking and then shifting gears, followed by signaling and then hitting the horn are examples of reaction time and are usually required in most driving situations.

The correct answer is complex.
There are two types of reaction times when it comes to driving - simple and complex. Simple reaction time refers to your action after receiving some sort of a stimulus - when you see the red light, you are supposed to break. When it comes to complex reaction time, however, it has to do with your assessment of the situation, and realization what it is you have to do in order to avoid an accident, for example.