I added one a few months ago and went to go check it, and there are 2 others almost right on top of it pointing in different directions, I guess that can't be prevented? I'm fairly certain they didn't add two more ALPRs that close to each other.

Some intersections have 4 or more cameras.

You can go onto Open Street Map and tidy up the data. I would recommend surveying the actual situation first to ensure you don't mess anything up.