Mack Trucks, Inc., has discovered that certain Mack truck models from the 2017-2026 and 2017-2019 model years don't fully meet specific air brake safety standards. They have asked the National Highway Traffic Safety Administration (NHTSA) to determine that this issue doesn't significantly affect vehicle safety. Mack believes their trucks compensate well for the shortfall in the required air reservoir volume due to design features like higher air pressure and additional air dryers. The public has until April 23, 2025, to submit comments, and the agency will announce their decision in the future.
Simple Explanation
Mack Trucks found out that some of their trucks don't follow a specific safety rule for brakes, but they think it's not a big deal for safety because their trucks have other features to help stop safely. They've asked a government group to agree with them.