Always take the whole lane in situations like this -- head of the line, with lane open to straight and turns. Helps the drivers too. Even moving to the rightmost wheel track gives them the wrong impression that it's okay to pass.
If you're injured, never admit fault. Difficult to remember when we're in pain and shock. But never admit fault to the police, emergency responders, insurance companies or lawyers who may call to interview you.
If you're injured and need medical care, get an attorney pronto and let the attorney handle everything. Injuries can be tricky with longterm consequences that aren't immediately apparent.
Also keep in mind that some states limit liability and compensation. For example in Texas those loud talking liability attorneys on TV are only interested in accidents that involve a commercial vehicle of some kind. That's where the deep pockets and big money are. They won't help you much in accidents involving only personal private vehicles. In those cases the settlements will often be limited to whatever the vehicle liability insurance covers and half of that may go to the attorney.
For working folks who can afford it, the best policy is your own insurance to cover all of your medical expenses in the event of a disabling accident. Don't count on the other party's insurance, even if they're clearly at fault. But that sort of personal insurance isn't affordable for everyone.