MCI D-Series

The original version was the 102DL3, entering production in 1992 and entering service by early 1993. The model number denoted the width (102 inches (2.6 m), exclusive of mirrors), "D" generation or basic model, "L" for long length (45 feet (14 m), nominally), and 3-axle configuration. The 102DL3 has large, block fender skirts, a rear-mounted radiator fan side-by-side with the intercooler fan, and air intake covered by a large grille, two piece engine door, small headlight/taillights, and a black roof cap. The seating capacity was 54 or 55 passengers, or 57-61 with the high-density configuration. The 102DL3 was renamed D4500 in 2001.[10]

The original version was the 102D3, entering production in 1994. The 102D3 has large, block fender skirts and a rear-mounted radiator fan side-by-side with the intercooler fan. It has an air intake covered by a large grille, two piece engine door, small headlight/taillights, and a black roof cap. The seating capacity was 46 or 47 passengers, or 49-53 with the high-density configuration. In 2001, MCI renamed the 102D3 as D4000.[11]

Greyhound operated a fleet of 98 102D3s.[12] Greyhound Canada operated a further 20 102D3s.[13]

The D4500 was exactly the same coach as the 102DL3, having been renamed in 2001 to promote a new, simplified designation system. It was replaced by the D4500CL and D4500CT in 2005.[14][15]

A 2002 D4500, #2905, operating for the Metropolitan Transportation Authority

The D4000 was exactly the same coach as the 102D3, renamed by MCI in 2001 to promote a new, simplified designation system. MCI replaced the D4000 with the D4000CL and D4000CT in 2005.[16][17]

The D4000H was the hybrid version of the D4000. NJT bought a test fleet, which succeeded. As a follow-up, they later bought a larger order of D4500CTHs in 2015.[18]

The D4000N was a narrow variant of the D4000, only 96 inches wide instead of the standard 102 inches.[19]

The D4000 ISTV, or Inmate Security Transportation Vehicle, are coaches designed for transporting up to 69 prison inmates. It is the only off-the-line, fully secured, heavy-duty inmate transportation coach available in the US or Canada. ISTVs are available with containment cells, sirens, a rear officer position, and bulletproof materials.[20][21][22]

A 2001-model D4000 Commuter Coach from Rockland Coaches at Port Authority Bus Terminal in New York City.

The D4500CL is a less-modified version of the D4500CT, compared to the D4500. It has a modified roof (with no visible rivets) and optional frameless passenger windows. In 2008, the D4500CL received a higher passenger deck for increased luggage capacity. MCI stopped selling the D4500CL in 2008. [23] [24]

The D4000CL is a less-modified version of the D4000CT, compared to the D4000. It has a modified roof (with no visible rivets) and optional frameless passenger windows. In 2008, the D4000CL received a higher passenger deck for increased luggage capacity.[25]

DART First State MCI D4500CT bus 914

The D4500CT was a modernized "contemporary" version of the D4500. It received enlarged headlights similar to those on MCI's G-series buses, a revised roof (with no visible rivets), and optional rimless passenger windows. In 2008, the D4500CT received a higher passenger deck for increased luggage capacity. [26]

The D4500CT CNG is the CNG-powered variant, it uses a Cummins-Westport ISX12N. It formerly used a Cummins-Westport ISL G or ISX12 G

Likely as a request from New Jersey Transit, their 2014 batch of D4500CT CNG coaches were delivered with redesigned headlights. This simplified design has three round LED clusters arranged in a gently curving row. [27]

A Coach USA/ShortLine D4500CTH in Midtown Manhattan.

The D4500CTH was a hybrid version of the D4500CT. It uses a Cummins ISL9 or L9 engine, with an Allison E^P50 hybrid system. It was introduced in 2008. [28]

The D4000CT was a modernized version of the D4000. It received enlarged headlights from the G-Series, revised roof (with no visible rivets), and optional rimless passenger windows. In 2008, the D4000CT received a higher passenger deck for increased luggage capacity.[29]

The D4000CT is also offered with a Cummins Westport ISX12 G, ISX12N, or ISL G CNG engine. With their order of 95 2011-12 model D4000CT CNG commuter coaches, the Los Angeles Department of Transportation was the first operator of these CNG coaches.[30][31][32][33][34]

A CNG-powered MCI D4000CT Commuter Coach, operating for the Los Angeles Department of Transportation.

The commuter coach version of the 102DL3/D4500 and 102D3/D4000 has a large electronic destination sign replacing the black roof cap and lavatory removed for a seating capacity of 57 passengers on the 45-foot model and 49 on the 40-foot model. With "slim line" seating, a capacity of 61 passengers can be achieved on the 45-foot model and 53 on the 40-foot model.[35][36]

All commuter coach models have bi-leaf plug doors, instead of the regular sedan or single-leaf plug doors.

A D45 CRT LE demo bus operating on the BxM18 bus of the MTA.

In 2017, MCI announced the next generation D-Series, the D45 CRT LE. This bus was based on the MCI J4500, and has a low-floor section for mobility devices. It is offered with a Cummins X12 engine. [37]

The D45 CRTe LE is an electric version of the D45 CRT LE.[38]

The MCI D45 CRT is identical to the D45 CRT LE but does not have a low entry door.[39]

The MCI D40 CRT is the 40-foot version of the D45 CRT. MCI has not announced a D40 CRT LE as of yet[39]

The D4520 is the touring coach version of the Next Generation D-Series. It is extremely similar to the D45 CRT, but has slightly different styling.[40]