I actually wrote the feature that they (probably) used to create this map! You can start with a CSV with either lat-long pairs, or street addresses, and load i

I actually wrote the feature that they (probably) used to create this map! You can start with a CSV with either lat-long pairs, or street addresses, and load it in. The hard part of the UX is giving error feedback. This is some test data I would have loved to have. I had several files of bike accidents.