Rapid Transit Series

GMC RTS II pre-production model testing in Oakland, October 1976.[2]

The RTS is the descendant of GMC's entry for the Transbus project which in turn was the descendant of the RTX (Rapid Transit Experimental), an experimental model for which a prototype produced in 1968 with notes of its production dating to early as 1964. Both the RTX and the Transbus were similar in terms of design to the RTS though had major differences in having a less-rounded body design, a one-step entryway, and (in the case of the Transbus) a 45-foot (13.72 m) length.

Wanting a backup plan in the case that the Transbus project was abandoned, GMC decided to modify the RTX/Transbus design and in 1970 began the project that became the earliest RTS with the first prototype being assembled in 1973 at which point the project went onto hiatus. Though closer to its predecessors than the production models, the RTS name debuted with this prototype. After the project was revived in 1974, GMC would later withdraw from the Transbus project and focus their energies on the RTS.

Front view

Rear view

RTS-06 bus in service with Community Transit

Through the history of the RTS, there have been six generations of production plus two experimental variants (one of which not having made it beyond the prototype stage).

• RTS-01 (1977–78): Produced for a consortium of agencies in California, Massachusetts, and Texas, the RTS-01 was similar to the replacement RTS-03 only with some minor differences and a different style bumper.
• RTS-03 (1978–80): The first mass-produced version of the RTS that gained popularity among transit authorities. NFTA Metro of Buffalo, New York received the first order of 96" RTS-03 Buses (Serial Numbers 001-065), whereas Detroit's DDOT received the first 102" order (Serial Numbers 001-070). The RTS-03 featured a modular design, which became the hallmark of the RTS; seamless, un-openable side windows; sliding ("plug") front and rear doors; and a distinctive, sloped rear module. The New York City Transit Authority ordered two RTS-03's as test vehicles, and sold one each to Green Bus Lines Inc., Queens Transit Corp. and Steinway Transit Corp. after they used the data learned to make changes in their order of RTS buses which became the RTS-04 model.
• RTS-04 (1981–86): Introduced in the early 1980s, due to the high rate of air conditioning, and engine overheating failures of the earlier series RTS buses, the RTS-04 eliminated the sloped rear end. with a squared-off rear end in order to provide the necessary space to house a larger air conditioning unit away from the engine compartment. The RTS-04 also introduced a newer DD6V92T engine with turbocharger, and a more pronounced side windows (and openable) that are similar to those featured in the latest RTS buses. These and previous models use independent front suspension. A 55-foot (17 m), 2 60-foot (18 m), and a 65-foot (19.81 m) articulated versions known as the RTS Mega were built, but never passed the prototype status. Most buses are given the option of tell-tale lights on each side of the destination sign; some were offered the lights on the backplate near the rear destination sign.
• RTS-05 (1987): GMC's attempt to move the RTS to a T-drive configuration. Rear module structure was heavily modified for the 'straight-in' arrangement, and would later be used as the design source for the Series 07.
• RTS-06 (1986–2002): The most common RTS found today and the only one made by three manufacturers (GMC, TMC, NovaBus). The RTS-06 is extremely similar to the RTS-04, except for slightly different rear ends found in later models that house the Detroit Diesel Series 50 engine. The front suspension for the -06 and later models was changed to a solid beam front axle. LACMTA RTS-06 buses also had a different radiator in the back. On April 30, 2019 the New York City Transit Authority retired the last of these RTS buses from regular passenger service with 1998 NovaBus RTS-06 # 5108 having the honor of doing the final curtain call on the B3 bus route in Brooklyn, New York. A retirement ceremony, with a ceremonial farewell celebrations with a last RTS partial trip on the M55 bus route with 1998 RTS-06 bus 5241 was held on Monday May 6, 2019 to officially announce that these RTS buses were officially retired from passenger service with 1998 RTS-06 buses #'s 5241 & 5249 on display in front of MTA's headquarter's at 2 Broadway for this historic occasion. These RTS buses have been in continuous service for the New York City Transit Authority for 38 years since August 5, 1981 when the first MTA NYCTA's GMC RTS-04 # 1201 of East New York Depot was placed into service on the B7 bus route in Brooklyn, New York, and the MTA-NYCTA/MABSTOA began to have the largest of said fleet.
• RTS-07 (1992): Experimental T-drive RTS; never put into mass production. The two models that were produced were for SMART in suburban Detroit.
• RTS-08 (1989–94): Front Wheelchair equipped RTS. The Chicago Transit Authority had wanted a bus with a front wheelchair lift and a back window, and contracted TMC to create such a bus. Fifteen 96-inch (2.44 m)-wide RTS-08s were also produced, all of which went to the CTA. After NovaBus took over production, the RTS-08 was replaced by the RTS-06 WFD (Wide Front Door), which are easily differentiated by the radically different front end and the presence of a slide-glide front door.
• RTS Legend (2006–2012): The first Millennium Transit RTS, it is similar to the earlier RTS-06 with the differences of a T-drive configuration and a new front bumper. Wide-door models were reportedly available, but none were ever ordered. For a host of reasons, no more than 10 buses were built before the contracts were cancelled; rejected coaches were resold to Foxwoods Resort Casino, Somerset County Transportation, and Texas A&M University.
• RTS Extreme (Production never started): The first semi low-floor version of the RTS.
• RTS Express (Production never started): RTS variant for "express" suburban use, with suburban seating and other features commonly found on motorcoaches.

A TMC-built RTS owned by Massachusetts Bay Transit Authority.

• 1978: The first 35-foot (10.67 m) RTS's are offered as is the option of electronic destination signs (as opposed to rollsigns).
• 1979: Rear door GM-designed wheelchair lifts were made available.
• 1981: With an order by the Port Authority of New York and New Jersey (for NYCTA and cousin organization MABSTOA), the option of a pop-open rear door is offered. This option becomes commonplace mostly in large cities as well as with the RTS-08. Also, a set of tell-tale lights were also offered; these lights can be found on each side of the front destination lights. The MBTA has green lights, while NYCTA buses have orange lights.
• 1984: A one-door suburban variant is offered for the first time, this is soon retired due to a combination of poor sales and decreased wheelchair access. It would be offered again in WFD form under NovaBus.
• 1986: Methanol-powered RTS's are produced in limited quality, these are the first alternatively fueled RTS buses.
• 1989: Compressed natural gas-powered RTS's enter production.
• 1996: First 30-foot (9.1 m) RTS's produced, some production is moved to the NovaBus plant in Niskayuna, New York.
• 2001: A test order of diesel-electric hybrid RTS's are produced for the aforementioned NYCTA and New Jersey Transit (one of which is shown above).

A diesel Nova Bus RTS WFD owned by Toronto Transit Commission.

At the time the RTS entered production in the U.S., GMDD (GMC's Canadian production arm) considered producing the RTS for the Canadian market. However, an outcry of protest from key transit providers over not wanting the "futuristic" RTS led GMDD to produce the Classic, an updated New Look that was first produced in 1983. The Classic would prove popular with US agencies as well.

When the Classic was retired in 1997, NovaBus decided to begin limited production of the RTS for the Canadian market. Produced from 1997 to 2001, most of the RTS models made for Canadian agencies were the RTS-06 WFD variant with the majority being sold to agencies in the eastern part of the country. Notably, the Toronto Transit Commission in Ontario operated a fleet of 52 buses built in 1998 while Société de transport de l'Outaouais in Quebec had 12 buses built in 2000.

Quebec-based Dupont Trolley Industries, specializing in rebuilding buses, previously offered a rebuilt RTS known as the Victoria with several styling changes. These buses are fairly uncommon, with most examples found in the fleets of transit operators in Montréal's suburbs (CIT Roussillon, Sainte-Julie public transit, CIT Chambly-Richelieu-Carignan).

From 1985 to 1997 Daewoo Bus built the BH120 Royale, a bus originally styled in a manner similar to the RTS. However, according to the Daewoo catalog, it states that it incorporated GMC's intercity coach model. Although in reality, the Royale has incorporated chassis from the Japanese bus manufacturer, Isuzu with Daewoo built MAN engine. The Royale compared to RTS has a completely different body structure, boasting underfloor baggage compartments, and sporting no modular construction. This bus is frequently assumed to be a foreign variant of an RTS, but apart from appearance, it shares nothing with it. The BH120 Royale was later restyled and renamed as BH120 Royale Super which distanced itself visually from the RTS and resembles its Japanese counterpart Isuzu Super Cruiser.[3][4][5]

However, General Motors did briefly consider building small quantities of the RTS at its GM Holden's subsidiary in Australia. A press release was issued noting the feasibility study, but no production commenced. Additionally, General Motors' Diesel Division in London, Ontario, Canada, also launched a study into building RTS coaches within its facilities, but never actually built any coaches.

Millennium Transit Services LLC

Industry	Transit
Predecessor	GM New Look bus
Successor	Nova LFS
Founded	2003
Defunct	2012 (Bankruptcy)
Headquarters	Roswell, New Mexico, United States
Products	Rapid Transit Series
Parent	Ludvik Co.
Website	www.millenniumtransit.com

Millennium Transit Services, LLC was a bus manufacturer formed in 2003 to take over the former Nova Bus manufacturing plant in Roswell, New Mexico and continue construction of the Rapid Transit Series (RTS) buses that were built there. The company was composed mostly of former NovaBus employees and financed by the city of Roswell, the State of New Mexico, and Pioneer Bank.

On July 27, 2005, the company announced its first major order: 68 transit and 221 suburban buses for New Jersey Transit. Full delivery of this order was expected to commence late in the third quarter of 2006, but "the inability to obtain necessary funds" forced the cancellation of the order.[6] All units completed for New Jersey Transit at that point were rejected and resold to Foxwoods Resort Casino (five transit), Somerset County Transportation (Somerset County, New Jersey) (one transit and one suburban), and Texas A&M University (25 transits).

Besides the New Jersey Transit order, MTS had secured a contract from the City of El Paso, Texas, to convert 25 Transportation Manufacturing Corporation-built RTS buses from diesel to clean-burning CNG. The second order was from Pueblo Transit for two transit buses. The New Jersey Transit order was actually the third order for MTS. Other orders included those from Santa Fe Trails and Beaumont Municipal Transit System. These latter two have since been canceled.

On August 29, 2008, the company filed for Chapter 11 bankruptcy protection.[7] The company has cleared Chapter 11 and is poised to return to full production, pending any significant orders.

On February 26, 2012, Millennium suspended production of its buses in order to do a full inventory of its Roswell facility.[8] The factory reopened in the summer of 2012; however, Millennium had yet to win any significant orders to date, since the cancellations.

A map check in 2019 appears to indicate that MTS no longer exists as an entity, and their facilities at 42 W-Earl Cummings Loop is now a vacant building and lot.[9] The whole property, formerly occupied by MTS, is available for lease as of January 28, 2019.[10]