Chen first of all go back and try to get everyone's contact including the police officer. Get a witness statement from every one of them, even if they didn't see the accident what they saw afterwards, ask them to be detailed as possible, get their contact information. If the person is pressuring you to pay, tell them you want to contact with the police officer first so you can get a copy of the report. If they keep contacting you then contact the filing officer and say you told them you were awaiting the police report/legal advice and told the person. This will buy you some time to get legal advice, and if they are harassing you it will put the cops on the offensive and not you. Also get a physical report from the paramedics so that your statement about how far you were in the lane when you got hit can be confirmed, that way driver can't say it was your front wheel or something but a full t-bone. ask police if any surveillance camera's are in the intersection. Ask the shops around there if any cameras view that street. This will give you more evidence and 3rd party view that hasn't been tampered. Be nice to the person that hit you, during meetings with police/attorney/witness if you maintain your cool and he does not it will work in your favor. do not be smug, just simply chen.
Your report, do not put your brakes were not braking fast enough and such, they will think you did not properly maintain your bike. Do not make it sound like any part of it could have been yours. Your bike was in working condition. Be confident, do not use maybe/supposed to/i could have etc, you saw the car and stopped as much as you could. short and sweet.