New York City Administrative Code 24-163
Idling in NYC by any vehicle for more than 3 minutes is against the NYC law, except when the temperature is less than 40 degrees F

New York State Policy Statement 0501
Ambulances are not exempt from the 3-minute law except when in active service.

New York State Education Law 3637
School buses cannot idle while parked on school grounds or in front of schools.

Proposed Legistation

New York City Council Intro 631-2007
A Local Law to amend the administrative code of the city of New York, in relation to engine idling.

New York City Council Intro 83-2004
Establishing Asthma Free School Zones.A Local Law to amend the administrative code of the city of New York in relation to establishing Asthma Free School Zones.