One Madison alder wants to know whether an ordinance meant to protect air quality is really doing enough to help the environment.
Right now, buses cannot idle for more than 15 minutes if the temperature outside is between 40 and 80 degrees.
But Alder Robbie Webber says air quality problems typically happen on days hotter than 80.
She also says the idling ban should be extended to more than just buses, especially around schools.
"If it's just waiting for the kid to run out that's one thing, but if its 15 minutes a lot of cars hanging around the school is really going to affect the air quality around schools," says Webber.
Webber says Madison is on the brink of being in federal non–attainment for air quality.
The Common Council's Commission of the Environment is expected to look into the issue next month.