[2020] public tranportation issue

Are you using any mods or workshop assets? How much RAM does your computer have?

If you can post your output log (player.log on Mac or Linux), then we can see your mods and any errors that might show up, which could be related. At least it's a good place to start narrowing things down. This guide explains where to find the log and suggests some sites to upload it to, as we can't attach files here on Steam.

https://steamcommunity.com/sharedfiles/filedetails/?id=463645931&searchtext=log