Section 250-RICR-120-05-45.8 - ExemptionsA. Vehicles, diesel engines and non-road diesel engines are exempt from the requirement of this regulation in the following circumstances: 1. Vehicles that remain motionless due to traffic conditions or at the direction of a law enforcement official.2. Vehicles idling when it is necessary to operate defrosting, heating, or cooling equipment to ensure the health or safety of the driver or passengers. In the case of providing heat, the exemption allows idling for up to 15 minutes per hour when temperatures are between 0 degrees and 32 degrees Fahrenheit. Idling for the purpose of providing heat will be allowed as needed when temperatures are below 0 degrees Fahrenheit. A passenger bus may idle a maximum of 15 minutes per hour to maintain passenger comfort while non-driver passengers are onboard whenever temperatures are below 50 degrees Fahrenheit.3. Vehicles necessarily idling when the primary propulsion engine is needed to power work-related mechanical or electrical operations other than propulsion (e.g., mixing or processing cargo or straight truck refrigeration). This exemption does not apply when idling for cabin comfort or to operate non-essential on-board equipment.4. Non-road diesel engines may idle when the engine idles for maintenance, servicing, repairing, or diagnostic purposes, if idling is required for such activity. In addition, a non-road diesel engine may idle as part of a state or federal inspection to verify that all equipment is in good working order, if idling is required as part of the inspection.5. An occupied vehicle with a sleeper berth compartment may idle for purposes of air conditioning or heating during federally mandated rest or sleep period. This exemption shall expire on July 1, 2010.6. Vehicles may idle when the primary propulsion engine idles for maintenance, servicing, repairing, or diagnostic purposes, if idling is required for such activity. In addition, a vehicle may idle as part of a state or federal inspection to verify that all equipment is in good working order, provided idling is required as part of the inspection.7. Police, fire, rescue, ambulance and other public safety vehicles, military vehicles, armored vehicles, other emergency or law enforcement vehicle, or any vehicle being used in an emergency capacity, may idle while in an emergency or training mode and not for the convenience of the vehicle operator. Also, an armored vehicle may idle when a person remains inside the vehicle to guard the contents, or while the vehicle is being loaded or unloaded.8. Airfield maintenance vehicles while actively being used to achieve their intended purpose on a state-owned or operated airport.9. Diesel powered engines or vehicles that must continuously operate while stationary in order to perform their intended function, in accordance with all applicable regulations (e.g., an electricity generator which is actively being used to power equipment on-site).10. Operating a vehicle mounted auxiliary power unit or generator set as a means to heat, air condition or provide electrical power as an alternative to idling the vehicle's main engine is not considered idling.250 R.I. Code R. 250-RICR-120-05-45.8