Last night I drove a long way (about 500 km) to return home. It was late and I was driving fast because I wanted to get home as soon as possible. So several times when I was driving behind a slow-moving truck on a narrow road, I wanted to shout at the driver ahead. Then I came to a crossroad with a traffic light. As I drove near, it turned red. I stopped my car at once. I looked left,right and behind. I found no cars or persons -- I was alone on the road. The person who would come to the crossroad was at least a mile away in any direction. Certainly going through the light would cause no danger. I could pass the traffic light. But strangely enough, I just stopped there, waiting for several minutes until the light went green. I asked myself why I refused to run the light. Surely it was unnecessary for me to be afraid of danger or being fined  , because there were no cars or police around at all. But I remained waiting until the light changed. When I finally got home, it was near midnight. My wife had fallen asleep. The question of why I stopped for that light came back to me again, because I stopped another two times for the red lights as "special" as the first one. I stopped, not because of the law, but because it was a good habit I had developed. In fact, we were used to doing something right just because we have made obeying the rules a good habit. We do it just because we should do it. I thought if another man met with the same thing, he would make the same choice. I believed so. And I could be trusted   by others. I believed that everyone would and could control   himself/herself well. It was amazing that we trusted each other to do the right things, wasn't it? The author waited until the light went green because   _  .
running the light would make him fined he was afraid to cause an accident he was prevented by the passers-by he was used to obeying traffic rules