Answer:1) fallen down power lines;
2) fire with dangerous fume
3) freezing rain
4) broken glass
5)spilled fuels.
Explanation:
Fallen down power line may be critical dangerous that of the other driver hook themselves on them it may lead to a huge fire that may even burn the other cars behind.
Fires that may be caused by interaction of broken electric wires with spilled fuel may be dangerous if one get into the fumes without noticing , it may be even difficult to get out of the car in time .
Broken glasses that may result from other cars may punch the tires of your car causing you to lose balance and even crash, making the situation even worse.