Bit of a plug, but I recently built something using this and found it really easy to use with react https://blog.georgejose.com/visualizing-transit-vehicle-loca...
I have long standing hate-on for the TTC's inefficiency... buses that more-often-than-not travel in clusters where the first one is half full, the remaining ones are empty. The TTC constantly raises fares but does little to utilize technology to make themselves more efficient!
/rant
You want to fix: 359s => 359ms in your post.