In September 2019, New World Engineering, LLC introduced the EADPF (Electrically Assisted Diesel Particulate Filter) to fit straight truck bobtail TRUs (<23hp). This EADPF Level 3 filter was sold through 2022 and was designed to meet the CARB requirements for straight truck Transport Refrigeration Units (TRUs) that are at least 7 years old and operate&hellip;