Well, today the entire traffic in a (supposedly) main thoroughfare in Montevideo in which I was driving was slowed to a crawl due to a horse-drawn carriage.

Not to mention they're a huge source of accidents (including mortal ones), when the horse freaks out.

Yes, they're a huge problem.

http://www.bluechannel24.com/?p=23885

http://www.pulsamerica.co.uk/2012/07/02/uruguay-crusade-to-f...