In China news paper, I found this case

One day, Mr. Ding driving his car cross an arch-bridge at midnight, he didn’t notice that there is a man lay on the bridge and drunk a lot(Mr. Li), because the arch-bridge block his eyesight and it is too dark outside, so he crash Mr. Li. After that, he shut down the car, and go to check if Mr. Li dead. He is so nervous and afraid, so he escapes from the crime scene. Finally, Mr. Li was founded and sent to hospital by someone, but it is too late, after the rescue, he died. Medicolegal expertise: Mr. Li died due to visceral injury, traumatic hemorrhagic shock and death. After the police reconnaissance, the place where Mr. Li lay on is hard be found when Mr. Ding crosses the arch-bridge, even though Mr. Ding can notice that Mr. Li lay down on the bridge, it is also hard to stop as soon as possible.

Personal opinions:
This case should divide into 2 parts: 1 Mr. Ding crash Mr. Li. 2 Mr. Ding hit-and-run driving.
1 Actually Mr. Ding Crash is just an accidents and he is not on purpose.
2 Mr. Ding hit-and-run driving, it is constitution of a crime. The constitution of the committing traffic offences is the person break traffic regulations and makes a very bad result. But Mr. Ding didn’t break traffic regulations, so can’t be judged as committing traffic offence. But for the humanitarianism, Mr. Ding didn’t send Mr. Li to the hospital, was a terrible behavior.