Fleet managers operating in high stop-start environments, such as urban delivery and refuse collection, have a new standard feature available to help reduce operating costs and improve fuel efficiency. PACCAR recently announced that Allison Transmission’s Neutral at Stop technology is now the standard offering on Kenworth and Peterbilt models equipped with the Allison 4700 Rugged Duty Series™ (RDS) transmissions.

Cutting Costs in Stop-Start Cycles

The standardization of this feature directly targets the fuel waste associated with idling in heavy traffic or at stoplights. The Neutral at Stop feature automatically shifts the transmission into neutral when the vehicle is in gear and completely stopped. Consequently, this action minimizes the load on the engine, which significantly reduces fuel consumption. As the driver prepares to accelerate, the transmission quickly and smoothly shifts back into gear, ensuring the powerful vehicle movement expected from Allison transmissions.

Rohan Barua, Vice President of North America Sales, Global Channel and Aftermarket at Allison Transmission, stated that this standardization will benefit mutual customers by offering an advanced, fuel-efficient solution that optimizes vehicle performance. You can view the full announcement on the Allison Transmission press release from September 11, 2025.

Part of a Larger Efficiency Suite

Neutral at Stop is just one component of Allison’s FuelSense® 2.0 package, an advanced fuel-efficiency technology suite. In aggregate, the technologies within this package can achieve fuel savings of up to 6%. This reduction in consumption not only offers substantial operational savings but also contributes to a more sustainable and environmentally responsible fleet operation. Furthermore, this move strengthens the partnership between Allison and PACCAR, ensuring that their trucks offer market-leading technology for efficiency in vocational and urban applications.

Also read: Three Ways to Maximize Fleet Return on Investment