Advanced Technologies


Idle Reduction

Idle reduction technologies reduce fuel use and emissions by turning a vehicle’s engine off when it is not needed. There are two main types of idle reduction technologies: those that are installed as a component of a vehicle and those that vehicles attach to when parked.

Mobile idle reduction technologies include: advanced batteries that power on-board equipment while an on-road vehicle is stopped, direct-fired heaters, auxiliary power units (APUs), and automatic engine idle reduction systems. Excellent applications include on-road vehicles that may idle when stopped for extended periods, such as delivery trucks, school buses, police and other emergency vehicles.

Stationary technologies include truck stop electrification (TSE), generally used for Class 8 (tractor trailer) trucks.  TSE refers to a system that operates independently of the truck’s engine and allows the truck engine to be turned off. The TSE system provides off-board electrical power to operate an independent heating, cooling, and electrical power system or a vehicle-integrated heating and cooling system.

Click here for a list of idle reduction technologies.

Diesel Retrofits

Diesel retrofits reduce emissions of existing diesel engines via engine re-powering or installation of after-burn technologies.  Examples include, but are not limited to: diesel oxidation catalysts (DOCs), catalytic exhaust mufflers, catalytic converters, closed crankcase ventilation/filtration systems, active- or passive-regeneration diesel particulate filters (DPFs), and selective catalyst reduction technology (SCRT). Level 2 and Level 3 retrofit technology applications are preferred where possible, because they reduce particulate matter emissions by 50% or more in many 2009 and older diesel engines. On-road applications include buses, trucks, service and utility vehicles. Off-road applications include construction equipment and some post-2009 off-road engines are also eligible for retrofit.


Many diesel retrofit technologies have been verified or certified by the U.S. Environmental Protection Agency, the California Air Resources Board or other such boards and agencies. Learn more about diesel retrofit technologies and verified technologies at:



Telematics systems lead to improvements in fuel efficiency (and hence, reduced emissions) by monitoring miles driven; fuel economy; idle time; driver behavior that can affect fuel usage, such as hard starts and stops; and status of onboard vehicle systems. Service charges (e.g., monthly subscription or service fees) exist in addition to equipment and installation costs.


Click here to learn more about advanced vehicle technologies and technology providers that serve the North Carolina market.