Sort of, yeah. The responding cop's assessment of the crash is considered pretty authoritative for what happened. So they can talk to both people then just lie

Sort of, yeah. The responding cop's assessment of the crash is considered pretty authoritative for what happened. So they can talk to both people then just lie and say the pedestrian entered the crosswalk late and didn't have right of way or whatever. A lot of time the way this goes is someone will have been drunk but the cop will simply not demand a breathalyzer. A crash while drunk driving is criminal, but without it may make it mutual fault. There was kind of a locally-known-among-cyclists case in chicago a few years ago where a driver (police family member) did a bad left turn and hit someone in the bike lane. A cop witnessed it and wrote a failure to yield ticket to the cyclist. Luckily there were a ton of witnesses and it got picked up by a good lawyer who worked it hard. But still there were no particular consequences to the driver or the cop.