Pothole reporting must have an edit option
Users who couldn't report the location info accurately can amend the details later, because i was one among the user who reported a pothole on a wrong place.
Long touch on the location/Arrow in the map to report hazards on the go which will have more accuracy and it needs to customized for the user whether you need a single touch or long hold on the location/arrow on the map because not all users are going to report it.
Pothole quick button on the maps customizable for users to decide what are the icons to have on the top of the maps to decide what they would like report as it is much more convenient and accurate.
UK Highways department are really good at maintaining the roads, So users may not need to report potholes every time, you will hardly find one or two potholes. So there should be a limitation for the user like they can only report two or three potholes in a trip, so the more the reports from the same location can be looked into as genuine reporting.