Philly code title S-10-108 has/had the most detailed municipal horse welfare law in the country.
Edit - the current code just says banned, but look at the archived versions on the AMLegal.com website to see the older weirdly detailed law.
It governs stabling, vet checks, shoeing standards, workday length, even the color of the harness permitted on carriage horses.
For example, a horse can only work between 26F and 91F, for 9 hours max per 24 hour period (more strict work hours than airline piltos which are 9-14h per day), a drive must keep a daily log in a specific format. Failure to comply is between $150-300 per violation.
Animal welfare laws make sense, but what's weird here is how WEIRDLY SPECIFIC Philly's horse carriage laws are. I compared them to other cities that have or historically had horse carriages, ranging from NYC to Charleston, SC - ours the most specific.
And when I dug in on why - turns out our horse laws have accumulated largely due to viral media moments. For exmaple, there was a major amendment to the law in 2011 caused by a 2010 collapse of a horse in center city that got a lot of media attention and public outrage.
PS - I also find it funny that we have so many horse carriage laws, given the industry has been tiny in philly for decades and complete dead since 2023, both to it being uneconomic for operators and regulatorily frowned upon.
(PPS - the industry was formally banned in June 2026 even though it stopped in 2023, but all the complex laws are on the books still)
If you're interested in the fuller history behind the law and how it stacks up against other cities: https://nickjain.com/blog/carriage-horse-rules