The 3rd Generation TriPac APU from Thermo King is based on the TriPac Evolution, but with additional features to reduce emissions and monitor performance. Available in two models, the standard and the aftertreamtent device model, the TRIPac APU eliminates unnecessary engine idling and provides telematics capabilities for refrigerated transportation. The standard model is a 49-state EPA Tier 4 compliant solution, the company stated, while the aftertreatment device model is a 50-state compliant solution for both CARB and EPA Tier 4 regulations for new OEM or aftermarket installs. Thermo King's TracKing telematics is available for both models, which both also include an updated controller and in-cab digital user interface.