Manual heavy truck transmissions, does the bell toll for thee?

Manual transmissions, does the bell toll for thee?

They’ve been a staple of trucks since the very first one was built, but for manual transmissions, the end may be nigh. Magnus Koeck, Volvo’s vice president of marketing and brand management, says he believes that five years from now, manual transmissions in trucks will have disappeared entirely.

One catalyst for this change, he explained, can be seen in the latest Volvo I-Shift transmission. For years, the one major aspect of manual transmissions that AMTs haven’t been able to match is the manual’s level of low-speed precision. But the crawler gears now available on Volvo’s latest AMTs correct this imbalance, according to Koeck.

The crawler option adds either one or two gears to the I-Shift, a low gear and an ultra-low gear, making it a 13- or 14-speed transmission. It enables controlled forward and reverse travel at extremely slow speeds, down to 0.6 MPH with a 3.58 rear axle ratio.

Volvo isn’t the only company offering a manual-style level of control in AMTs. Eaton’s latest transmissions feature low-speed options specifically designed to mimic the level of control found in manuals, which can be a bridge in the gap between manuals and AMTs.

Those features include “urge to move,” which allows the truck to automatically drive forward when the truck is in gear, but the driver’s foot is not on the gas or the brake, and “blended pedal,” which allows the driver to directly control clutch engagement during engine idling and drive at varying speeds.

Allison also offers similar features in its fully automatic transmissions; the 4700 RDS, for example, features the ability to creep slowly and perform other low-speed maneuvers. Similar crawler gears are available in Mack mDrive transmissions, as well as Detroit’s DT12 (on which it is referred to as “creep mode”).

For those in vocational or construction applications, this is a welcome development and may remove the last remaining reason to spec a manual transmission.

Above: The percentage of Volvo trucks spec'ed with the company's I-Shift automated manual transmission has quickly grown in the last few years.
Above: The percentage of Volvo trucks spec’ed with the company’s I-Shift automated manual transmission has quickly grown in the last few years.

Five years may seem a bit soon for an industry that, not too long ago, was thoroughly dominated by manual transmissions. In 1999, a JD Power study found that 90% of trucks were sold with manuals; today, Volvo is reporting that 88.8% of its trucks are spec’d with I-Shift AMTs.

“Now for the first time, our automated manual can do the job, and we can serve all the segments,” says Volvo’s Koeck. “So for our customer base, there’s really no need to have a manual transmission. With the crawler gears you get now, I don’t see why you would need a manual, and I truly believe that they will disappear within five years.”

You May Also Like

Trade Show Talk: Trends kicking off 2024

Alternative fuels, connectivity, efficiency—there’s been plenty to report on from trucking trade shows, but which topics stuck out most?

trade-show-Talk-work-truck-week-tmc-geotab-connect-hdaw

Geotab Connect, HDAW, TMC, Work Truck Week—It's been a busy start to the year here at Fleet Equipment. From tires to tech, connectivity to components, there's a list of topics that we've covered as companies look to deliver new products throughout this year, and beyond.

What have been some of the key themes so far? If you guessed EVs, you'd be right... sort of. While the race to the electrified future is always top of mind when talking about industry developments, this year, another big "E" took center stage, and that is efficiency. Many companies seem to be focusing on improving current generation technology to make sure fleets can get the most out of the money they've invested in their trucks.

Beyond standard TPMS: The crucial role of customizable tire health alerts

Delving into the shortcomings of standard TPMS and why customizable tire health alerts are crucial for commercial vehicle fleets.

Driving for Alabama: A family affair

The stories of two truck drivers for ’80s country hitmakers Alabama.

Photos by Amazing Grace Photography
So you want to write for Fleet Equipment?

Of course you do. As the premiere online publication for the heavy-duty truck market, charting the latest in trucking equipment, technology, and service trends, Fleet Equipment has a knack for digging up the stories behind the stories (while having a lot of fun along the way). Now you can be a part of it! But

Write for Fleet Equipment
Babcox Media mourns the passing of Tim Fritz, longtime editor and friend

Babcox Media Editor Tim Fritz passed away on Feb. 23 from a heart attack. He was 53 years old. Related Articles – Debating the merits of ethanol – Why isn’t a truck’s appearance part of the PM process? – Change is coming to U.S. energy policies Tim joined Babcox Media in 1990 and spent 31

Tim-Fritz-1400x700

Other Posts

Kenworth names 2024 Dealer, Parts Council members

Kenworth selected executives representing 480 dealerships for its Dealer Council, and named eight members for its Parts Council.

Kenworth-Names-2024-Dealer-Council-Supports-Worlds-Best-Customer-Experience
ACT Research data shows Class 8 order surge paused

At a seasonally adjusted 17,100 units, March marks the first month since May 2023 for seasonally adjusted activity below 20,000 units.

ACT-March-24-Class-8-order-surge-pauses
Volvo Group to build new heavy-duty truck manufacturing plant in Mexico

Volvo expects the plant to be operational in 2026.

Volvo-name-logo-north-american-heavy-duty-truck-production-mexico-mack-plant
J&R Schugel wraps Kenworth T680s to support driver causes

After a driver beat breast cancer, the company wrapped her truck in pink and white to support her goal of raising awareness.

JR-Schugel-breast-cancer-awareness-truck