Hi
The police asking for the submission of the originals of DL and RC is only for the purpose of investigation.
It will also prove that there was a valid DL in your father's name .
it appears to that there was a deliberate delay in proceeding with the accident case from the part of the police , to support the biker in his claim.
since the trial in the motor accident case did not happen as the police dint submit the charge sheet after the FIR making your dad accused including under 279 of Ipc.
usually the FIR is considered in MACT while ordering the matter and in this matter trial has not taken place in the criminal court since police didn't submit the Charge sheet which ultimately helped the biker and his lawyer.
whereas your side could have had a better defense if your dad had got acquitted in the criminal case charged by the police.
if the car was hit from behind your father then sec.279 is a made up charge , you should provide supporting details and evidence if anything you have , to the officer and co-operate with them.
First go and meet the concerned investigating officer. if the biker has approached the police for the help to support his claim, they may be trying to help him for the purpose of accident claim .
so you should meet the officer.
it must be a deliberate delay made by the police till the MACT order happened for the purpose of compensation, as the acquittal of your dad in the accident case/FIR which was charged u/s. 337,338, 427 and.279 would have dismissed biker's accident claim before the accident tribunal as his contributory negligence.
In high court you can bring to notice of the court that the accused in motor accident case charged by the police is yet to be tried and can be acquitted on certain ground .
the next step should be based on the charge sheet and what is mentioned in it, if the police is going to file it in the court. either take trial or compromise as the sections are compoundable under the provisions of criminal procedure code.
at the end, if there was a valid insurance policy your dad will not have to be pay as the company is liable to pay