The article mentions that Atlanta runs sweeps quarterly. This is only inside the city though. I live outside the city (25 to 90 minutes depending on traffic) and we don't get any sweeping. The intersection outside our neighborhood gets about an accident a week and it's just constantly filled with glass and, occasionally, bumpers. The tow truck drivers are normally kind enough to sweep it to the side but that isn't great for cyclists. Everyone drives SUVs here and their tires are big enough that glass doesn't matter so no one is going to agree to pay for sweepers.