Park City UT has introduced a no idling ordinance. Unecessary idling of a motor vehilce attracts a fine ($100 I think). It does not apply to necessary idling in normal traffic conditions. The Police who enofrce this ordinance have a newish (2009) building built according to green princples and they proudly display the fact with outside  information panels. Inside you can pick up a booklet on the subject while you wait to be bailed. It includes a geothermal heat pump system,

 

 

 reflective roof, onsite stormwater management and passive solar design amonst other things. The outside entrance is park like, inviting people to treat the facility as a useable part of the urban fabric. I have included some photographs, including the Municiple HQ which is  refurbished former school again redeveloped along green lines, with a solar array on the roof.

39% of the US energy use is generated by buildings, the usuage here in Park City is likley to be higher and the photo of Main Street from Thursday evening demonstartes why, in fact it was worse today (Friday. This is an unusual Spring and residents are hoping the real Spring will arrive soon.