hit from behind in car accident

This Forum is not for Day Dreamer.

There is no guarantee that either B or A will win the case, but there is guarantee that only one will definitely will win the case.

According to the driving rules, the driver of following car B is supposed to keep safe distance at all times, hence in this case B car driver is at fault. 

The query is hypothetical and fabricated starting from the word "suppose" means not true / real.

Hypothetical questions can also be asked here in order to educate oneself.  If I am a driver I would like to know what the law is. Normally the law is as Mr. Kishor Mehta says. But often the police chargesheet the vehicle in front, which is not correct. My son had such a problem in USA. As it was a small fine he did not contest. The driver of the vehicle in front can claim damages from the insurer of the vehicle behind. But insurance companies always contest and it is difficult to get compensation.

It is called sleep apnea. Consult a psychiatrist.

It is not advisable to seek remedies for chronic or acute maladies on online platforms, it will be in the interests of the queriest to immediately consult a medical expert.