The only way I know of is to obtain a copy of the accident report from the investigating police agency.. now if you know when, where and who, you can send a few dollars (Amount depends on agency) and depending on the agency policy (Some only release to insurance or party involved) they will give you a copy.. Then you need to know how to read it... Some of them can be a bit..er..cryptic.
(Last one I seriously looked at involved my daughter.. If you want to know what happened ask her cause her version differed from the investigator's report only in that the investigator used formal terms like "Vehicle #1 and Vehicle #2 where as my daughter used "The other guy" and I/Me (respectivelly) NOTE Vehicle #1 is traditionally the AT FAULT driver, and this was the case).
Home is where I park it!