This points to a larger societal problem of lackluster labeling requirements - people should at least have the knowledge so they can make informed decisions.
No one is going to label the streets.
Why not? As a citizen paying taxes I'd like the ability to quickly know who the paving company was (or if city workers, then definitely who specifically was involved), and who the supplier of the asphalt (etc) is, etc; a platform like the stock market but for cities, requiring to release an annual report (maybe some already do have this requirement?), and the ecosystem that could develop around it would be very useful. Is a city run well - why and who seems to be leading the success?
And Waze will add an “Avoid Non-Vegan Routes” option.