So, you hit his back? If it is, that could be all your fault.
In this case, I think your "2是承认责任但是有理由" is better. Try to find some reasonable 理由 but don't say your break was not working! Then, go to city and ask a less penalty fees.
You are fully at fault because you hit the back of another car. Why did you wait for the fine ticket at the scene?
If the fine is not much, <$200, it does not make sense to have a lawyer. LS's excuse is very good.
You are fully at fault because you hit the back of another car. Why did you wait for the fine ticket at the scene?
If the fine is not much, <$200, it does not make sense to have a lawyer. LS's excuse is very good.