Allison Transmission > Commercial Products > Highway Series
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Allison Highway Series fully automatic transmissions get the most performance out of higher horsepower engines, while putting more control to the wheels. The result is smooth, full power shifts at any speed and faster route times throughout the day.
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Load-Based Shift Scheduling (LBSS)
To optimize fuel economy and maintain superior Allison Automatic performance, Allison LBSS automatically selects between Economy and Performance shift schedules based on the vehicle's actual payload and the grade on which it is operating. It has proven to increase fuel economy by up to 5%*.
Load-Based Shift Scheduling Flyer
Fuel Efficiency
Recent fuel consumption testing conducted by Transportation Research Center, an independent, third party test facility, proved that Allison Automatics get better fuel efficiency than manual or automated manual transmissions.
Fuel Brochure
Reduced Engine Load at Stop (RELS)
With RELS, the transmission automatically reduces the load on the engine when the vehicle is at a full stop. RELS not only saves fuel, it reduces overall vehicle emissions all while remaining invisible to the operator. This feature is useful for city traffic and duty cycles with frequent stops forcing the engine to idle.
Prognostics
Allison prognostics allow you to quickly monitor oil life, filter life and transmission health. Prognostics take the guesswork and hassle out of scheduling routine vehicle maintenance to save you time and money while providing maximum protection for the transmission. That means less downtime, lower life-cycle costs and, best of all, greater productivity for your fleet.
Startability
Startability is a vehicle's capability to launch and pull a load. Simply put, it's the 'grunt' or 'get-up-and-go' of a truck. Often only 1st gear ratio is used to judge a vehicle's startability. The truth is, one has to consider the engine torque at the required launch rpm and the torque multiplication of the Allison torque converter. Manual and automated manual transmissions have to launch at very low engine rpm in order to prevent damage to the clutch. This means less torque, which is why they have very deep 1st gear ratios to help them overcome their clutch limitations.
An Allison Automatic uses the full torque from the engine and multiplies it with the torque converter. When the 1st gear ratio and rear axle ratio are factored in, the Allison provides greater startability.
Startability Flyer
Customer Profile
Operating in the heavily populated Mid-Atlantic region, Fleet Transit, Inc. delivers fuel to gas stations throughout the northern Virginia, Washington, D.C. and Baltimore areas. Fuel delivery is a very time-sensitive and competitive business. "We have to work smarter, and that's one of the main reasons we bought Allison transmissions. I think they're a better deal in the long run for us. They make our fleet more economically viable on a cost-per-mile basis."
– Kevin McNeil, President of Fleet Transit, Inc.
David credits the reliability of Allison automatic transmissions for keeping the fleet on the road and out of the repair shop. "The drivers don't have to be concerned with what gear to shift to next. Allison's been a big part of keeping the trucks more reliable and getting the product where it needs to go."
– David Chovanec, fleet maintenance coordinator for Blue Bell
Shift Energy Management/Low Range Torque Protection (SEM/LRTP)
SEM/LRTP provides better engine/transmission integration to optimize the entire driveline system. The result is faster, smoother, more consistent shift quality, increased powertrain durability, improved performance and an overall more efficient vehicle operation leading to greater fuel economy. This sophisticated communication between the engine and transmission serves as the foundation for other features.
Shift Energy Management Brochure
Increased Ratings and Internal Enhancements
For 2010, horsepower and torque ratings have increased on 1000/2000 models to allow a broader range of applications at a lower initial cost. The power required to charge the oil lube distribution and main pressure system of the 1000/2000 models has also been reduced. The result is more efficient operation that helps improve fuel economy.
- Variable Modulated Main reduces main pressure when clutch apply system does not require full main pressure.
- New Wave Friction Plates reduce internal drag
My 2010 Update Flyer
Smart Controls
Allison Highway Series automatic transmissions have brains in addition to brawn. Optional electronic control packages provide precisely the performance features you need to get the job done — whatever it may be.
Secondary Shift
Schedule |
Select between two pre-programmed shift patterns — quickly and easily. Match shift characteristics to the driving conditions with the simple push of a button. Secondary Shift Schedule Flyer |
Automatic
Neutral |
Improves safety, fuel efficiency and productivity. With Automatic Neutral on the Park Brake, the transmission electronic controls know when to command neutral — automatically. No need for the driver to shift. Automatic Neutral Flyer |
Retarder
Enable |
Get the best braking possible through total transmission retarder/vehicle integration. Electronic controls precisely blend the transmission, retarder and service brakes for peak efficiency. Retarder Enable Flyer |
Output Speed
Indicator |
Exceed a preset output speed and the transmission electronic controls produce a usable electronic signal for warning devices and other auxiliary vehicle equipment. Output Speed Indicator Flyer |
