James Wangs explains how the Dependable D changed bus travel

James Wangs explains how the Dependable D changed bus travel

There as soon as was a bus known as the Dependable D. It’s really known as MCI DL3, but it surely undoubtedly earned its nickname.

Dependable D has a particular place in my coronary heart. In my opinion, it was actually mixture of dependability, consolation and curb enchantment. It’s the motorcoach I began my profession in and the place I spent a variety of time behind the wheel. I wish to pay homage to the MCI D collection.

Between the late Nineteen Eighties and the early Nineties, the panorama of the motorcoach business was altering. Coach bus designs had been beginning to quickly evolve round a number of elements.

One issue was dimension. Most industrial interstate coach buses had been constructed 40 toes lengthy. This was ruled by US interstate legal guidelines at the time, which prohibited buses longer than 40 toes. But on Dec. 18, 1991, all of that changed when the Intermodal Surface Transportation Efficiency Act (ISTEA) was signed into legislation, permitting freeway industrial coach buses to extend in dimension to 45 toes.

The second issue was an inside Motor Coach Industries (MCI) resolution. At the time, all MCI coach fashions had two-stroke engines. That was about to vary.

In 1987, Detroit Diesel launched the New Detroit Series 60 four-stroke engine. Among many different advantages, the new engine ran cleaner and was extra gasoline environment friendly as a result of gasoline was consumed as soon as each 4 strokes versus each two. On prime of that, the four-stroke engine didn’t launch burnt oil into the air as the two-strokes did, so it required much less oil.

Other advantages of the four-stroke engine had been that it lasted for much longer than two-stroke engines and the oil for the four-stroke was less expensive.

But Detroit’s Series 60 four-stroke engines had been a lot bigger than the twos, requiring a bigger engine bay to deal with them, and that meant MCI needed to provide you with a brand new design.

A 3rd issue was the Canadian authorities. Around 1988, the Canadian authorities was searching for a wheelchair-accessible intercity bus.

A famend Canada-based motorcoach producer, MCI already had a shining fame for constructing extraordinarily dependable buses. So, it was a no brainer for the Canadian authorities to go to MCI for a brand new bus design.


In 1989, two years earlier than buses had been allowed to be 45 toes lengthy, in partnership with the Canadian authorities, MCI began taking part in with design choices to see how the 45-foot-long idea would work. In 1991, MCI created two 45-foot prototypes.

One of the first testbeds was stretching an current MCI 102-C3 mannequin. MCI added a 5-foot body part to the 40-foot 102-C3 — at the time, MCI’s newest and biggest mannequin — to stretch it out to 45 toes (14 meters).

Because MCI had put a lot analysis and design work into the 45-foot coach idea, it did not take lengthy for the firm to create a sound and dependable 45-foot coach bus that was prepared for manufacturing.

Less than three months later, throughout a United Bus Owners Association (now UMA) Bus Expo in February 1992, MCI launched the 102-DL3 to the public. The first three numbers in the mannequin title indicated the width of the coach (102 inches), the D is its mannequin line, the L stood for lengthy (45 toes), and the 3 at the finish indicated that it had three axles.

I really like the DL3, however somebody ought to have employed a advertising and marketing man to present it a catchier title. I’d have named it one thing like the MCI Defiant because it type of defied the 40-foot limitation of motorcoaches again then.

By late 1992, the 102-DL3 — which got here with choices for a wheelchair raise and an accessible toilet — entered full manufacturing and it was an on the spot hit.

40-footers nonetheless standard

A shorter model of the D collection, the 102-D3, was launched in January 1994 for these operators that also wished to make use of 40-foot buses. There was nonetheless a variety of demand for the shorter body as a result of, at the time of the 102-DL3’s launch, many bus corporations had garages, stalls and bus lifts that would accommodate solely a 40-foot coach.

Private motorcoach excursions, in addition to scheduled service corporations like Greyhound, went nuts over the 102-DL3 and, as soon as once more, MCI proved itself as a stable coach producer.

During greater than a decade of dependable service, the D fashions had been cherished by their house owners, drivers and mechanics alike. They had been easy to drive, simple to work on, and really dependable and low-cost to function for fleet house owners, incomes them the nickname “the Dependable D.”

Then, the D mannequin started to indicate its age. So, the D collection coaches set the stage for the subsequent era of recent motorcoach design.

By 2005, MCI had launched its new E and J collection coaches to compete with Prevost’s new H3-45s.

Compared to the J mannequin’s curvier traces and extra modern-looking inside, the D mannequin appeared outdated. But, regardless of its seems to be, the D collection was nonetheless going sturdy.

Grayhound continued to buy D fashions, which grew to become the spine and workhorse of its fleet. Transit businesses bought them to bolt their longer-distance commuter routes. And luxurious tour corporations had been nonetheless shopping for D fashions for constitution journeys.

So, MCI determined to present the D mannequin a facelift.

New generations of D fashions

In 2005, MCI launched a brand new era of D fashions: the 45-foot MCI D4500CT and the 40-foot MCI D4000CT. (The CT denoted the mannequin’s up to date design.)

In 2010, MCI as soon as once more up to date D collection coaches to satisfy new Environmental Protection Agency (EPA) requirements. This improve included a re-engineered cooling bundle, which included a single fan with a three-speed clutch and a shorter belt.

In 2017, MCI rolled out the subsequent era of the D collection: the D45 CRT. Primarily designed for commuter and metropolis transit businesses, and with the means to extra effectively board Americans with Disabilities Act (ADA) passengers, the D45 CRT affords a decrease vestibule in the midship, sacrificing one in every of its rear baggage bays.

Although MCI nonetheless classifies the D45 CRT as being a part of the D collection, the body of the coach relies on the MCI J mannequin body.

The J mannequin and the D45 CRT share an an identical wheelbase, general size, and entrance and rear overhangs. The D45 CRT shares the similar engine choices as the J4500.

I imply, come on, MCI, let’s simply name it a J mannequin.

Today, it is uncommon to see the beloved authentic D fashions on the street. Greyhound is phasing them out, as are many different constitution and tour operators.

In mid-July 2022, Peoria Charter, the firm I work for, offered off two of its three final remaining D4505s. In reality, I did the promoting. We’ve nonetheless obtained one left if anybody is .

Viewers’ ideas

Here’s what a few of you needed to say about my tackle the Prevost pronunciation debate:

Volvotruck860: They are nonetheless being utilized in New York to attach individuals between the suburbs and the metropolis. Slowly being changed by Prevosts however they’re nonetheless tremendous widespread. A real testomony to their reliability. And a real basic

Greg Hanson: We at Sundance Stage Lines nonetheless have six D3s (Five have over 1,000,000 miles every and the different one is at 965,000) and two DL3s, however these will go away subsequent yr when California smog legal guidelines drive their retirement. We would have extra 40 footers, on account of the variety of restricted roads in our space, however MCI tousled the D in the 2010 replace by putting in the DEF tank in the rear baggage bay as a substitute of redesigning the gasoline tank space and making different geared selections in direction of the commuter market.

Bob Bergey: One of your greatest and most fascinating movies, James! I loved it. I began my driving profession in 2002 driving D fashions earlier than shifting on to the J’s.

Bus & Motorcoach News columnist James Wang is co-owner of Peoria Charter Coach Company and a bus geek who shares his ardour for the motorcoach business on his two YouTube channels, J Wang and Motorcoach World.

Read extra James Wang’s columns right here.

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