Dumbarton Express

The Dumbarton Express service consists of two bus lines, the DB and DB1. It is administered and governed by AC Transit, with oversight by the Dumbarton Bridge Regional Operations Consortium (DBROC), and comprised of AC Transit, Santa Clara Valley Transportation Authority (VTA), BART, SamTrans and Union City Transit. Operated and maintained by MV Transportation, the Dumbarton Express is funded by Regional Measure 2.

History

• The Dumbarton Express route started up on September 10, 1984. It was originally funded by the Metropolitan Transportation Commission as a 1 year demonstration project. AC Transit ran the route initially using Gillig Phantoms (1450 series) running out of the Newark yard, and later Phantoms out of the Hayward division (1400-1459) along with Flyers (ranging from 1136-1169). Later the contract was awarded to Peninsula Charter Lines in East Palo Alto. Ever since PCL had the contract, it has bounced around between various contractors including AC Transit.
• A route designated as DB2, that lasted a brief period in 1999-2000 served Sun Microsystems' headquarters (now Facebook's/Meta Platforms, Inc.'s headquarters) and a small industrial area in East Palo Alto along Bohannan Drive.

Routes

Map & Schedules

• DB
• DB1

Fares

Current

Roster

Active

Fleet Number(s)	Thumbnail	Build Date	Manufacturer	Model	Engine	Transmission	Notes
201-216		2015-2016	Gillig	Low Floor 40' (G27D102N4)	Cummins ISL9	Allison B400R	Delivered in December 2015 to early 2016. 201-208 are 2015 models. 209-215 are 2016 models. Suburban configuration with a rear door Entered service on 4/4/2016. Featured a new paint scheme which is a blue version of AC Transit's 6100 series paint scheme.

Retired

Fleet Number(s)	Thumbnail	Build Date	Manufacturer	Model	Engine	Transmission	Notes
150-155		1992	Flxible	Metro "C" (40102-6C)	Cummins ISM	Voith D863.2-W7	Suburban configuration (no rear door) Repowered from Cummins L10 CELECT engines in 2002. Retired in 2011. All units were off of the property by 2014 and were scrapped.
160-165		2002	Gillig	Phantom Suburban 40' (C27D102N4)	Cummins ISL	Allison B400R	164 was pulled from service in early 2016. Retired and returned to SamTrans in April 2016. View the series page for detailed disposition info.
303		1964	GMC	TDH-4519	Detroit Diesel 6V71N	Allison VH	Operated by Peninsula Charter Lines Ex-Sacramento Regional Transit District 4512.
312		1967	GMC	TDH-4519	Detroit Diesel 6V71N	Allison	Operated by Peninsula Charter Lines Ex-Wichita Transit 6727 (ex 27-67) (Serial: TDH45191954). It was used as a back up bus
403-407		1979	Grumman Flxible	870 (53102-8-1)	Detroit Diesel 8V71N	Allison V730	Purchased and operated by Peninsula Charter Lines for Dumbarton Express. Ex-Houston METRO #?, 867, 956, 909 & #?. Retired circa 1992.
639, 640, 645-648		1998	Gillig	Phantom 40' (C21D102N4)	Cummins M11E	Allison B400R	Ex-SamTrans 639, 640, 645-648. 639 & 640 transferred from SamTrans in December 2011. 645-648 transferred from SamTrans in fall 2014. 648 was pulled from service in early 2016 due to a small diesel particulate filter fire. Retired in April 2016. 639 & 640 remained on MV Transportation/Union City Transit property as back up fleet and returned to SamTrans on 12/27/2016. 645-648 returned to SamTrans in April 2016. View the series page for detailed disposition info.
800, 801, 802, 805		1983	Gillig	Phantom 40' (40/96TA6V92)	Detroit Diesel 6V92TA	Allison HT-740	1982 models. The total amount of units is unknown; 5 or more units? Ex-SamTrans low 800 series units; transferred in 1999. Initially operated in the SamTrans livery Initially used for the route DB2 in 1999-2000. Retired in 2001.
805-808		2003	Gillig	Phantom 40' (C20D102N4)	Detroit Diesel Series 50 EGR	Allison B400R	Ex-AC Transit 805-808. Exx-SamTrans 805-808. Suburban configuration (no rear door) 806 retired in early 2015 due to a blown turbo. Retired and returned to SamTrans in April 2016. View the series page for detailed disposition info.
850, 854, 855, 862, 857, 874, 879		1984	Gillig	Phantom 40' (40TB/96/6V92)	Detroit Diesel 6V92TA	Allison HT-747	Ex-SamTrans high 800 series units; transferred in 2001. The total amount of units is unknown Retired circa 2002-2003.
96001-96004		1996	Gillig	Phantom 40' (40/102TB S50)	Detroit Diesel Series 50	Allison B400R	Ex-LADOT 96001-96004; leased from 2012-2016. Exx-Veolia Transport. Exxx-Hertz (Misc. Airports). 96001 retired in December 2015; transferred to MV in Chicago, IL in February 2016. 96002-96004 retired in April 2016; transferred to the MV/RTC Simmons Yard in Las Vegas, NV and are used as training buses.

External Links

• www.dumbartonexpress.com