Just as others have already stated, the degree to which he was speeding is the key factor in determining who was at fault. However, it is very difficult to say where the cutoff is at... Is 15mph over the riders fault, 20mph, 30mph? You get the point. It is all a matter of perception and almost always the car driver gets the benefit of the doubt, especially when the rider is deceased and cannot defend his actions.

In any case, this type of accident is all too common and the reality of riding on the streets. It is ultimately the rider's responsibility to ride respectfully of the bike and his/her own life as it is the rider who pays when things go wrong.

RIP and ride carefully!