That's not a court date. It's a plea hearing, that is, "arraignment." You go in and request a jury trial, plead guilty / not guilty, and they set the "real" trial date. You lawyer will walk you through this. He might try and talk you / them into reducing the charge. This is a two way gotcha. If you TRULY are innocent, and you stick with a jury trial, you might get convicted...........of the full deal........and there is no reducing that
So if yo plead it down to "something less" even though you "did nothing," you have cut your losses.
This whole deal smells. If you are being ABSOLUTELY honest here, you could get screwed real easy. No witnesses except your accuser --who is likely the guy that hit you-- it's going to depend on "who they believe."
You might check into "if" there are any LEO freeway cameras nearby.