Pacific Railway Enterprises, Inc. (PRE), A Woman Owned Corporation specializing in Railroad System Design and Consulting has been in operations since May 1994, provides an array of services to our clients. PRE's staff have amassed an impressive accumulation of railroad communications and signal expertise in the areas of railroad freight, light rail, commuter and transit signal design, inspection, construction management and maintenance services.

  • A Woman Owned Corporation specializing in Railroad Signal Design and Consulting
  • Certified Small Business - CA No. 36200
  • California DBE, NAICS Codes 541330, 541340, 541512
  • Washington DBE - No. D2F0024183
  • Texas DBE/WBE - CIN #WFDB91595N0119
  • Oregon DBE/WBE - No. #8559
  • New Mexico DBE - No. 18-02-630
  • Utah DBE
  • Florida DBE
  • Massachusetts DBE

Major Project Accomplishments

SANDAG - San Diego Downtown Improvements


In 2008, SANDAG explored options to increase capacity of its downtown LRT operation. The LRT operator, MTS, provided operating requirements and characteristics to facilitate a new terminal station and create an operational plan bringing all LRT systems to the downtown stations without transfer. The downtown operation also accommodated the new low-floor boarding offered with new LRVs coming into the overall system.

PRE personnel produced complete contract documents for the Job Order Contract (JOC), working with SANDAG and DEA to assure contractual goals and objectives were quantitative and attainable.

The initial phase of the improvements included a new diamond double-crossover controlled from a remote case in downtown on "C" Street. PRE provided detail designs to control the new crossover utilizing Siemens S7 Controller and ACM 100 Wheel Sensing Devices, keeping the installation footprint to a minimum. An adjacent existing site also required signaling modifications to accommodate the new "double-terminal" operation required by the MTS Operations. The effort included multiple agencies and departments requiring cooperation and coordination.

    Project Highlights

  • Installation of power crossovers, turnouts, and signals.
  • Use of WSDs for train detection, eliminating need for track circuits.
  • State-of-the-art communications network to support CTC expansion to "street-running" territory.
  • Automatic routing of LRVs entering and exiting the new terminal operation at America Plaza and Santa Fe stations.
  • Main junction entering downtown is currently in DSDC, utilizing same equipment as the "C" Street location.

SANDAG tasked PRE with developing the rail systems design for the new signaling system. PRE's work included:

  • Final systems plans, specifications, and estimates
  • Signal systems application software logic requirements
  • Design Support During Construction (DSDC)
  • As SANDAG representative, supported contractor installation forces in the testing and commissioning
  • Supported dynamic testing with LRVs and office functionality

The "C" Street site was successfully commissioned in August 2012. The new operating plan was implemented on September 3, 2012 and has proven the system to be effective and efficient.

PRE's technical staff continues to assist in the detailed phasing plans by providing design modifications as required by SANDAG. Imperial Junction site is currently in the early construction stage. PRE staff continues to provide DSDC functions.

Client Information



SANDAG is governed by a Board of Directors composed of mayors, councilmembers, and county supervisors from each of the region's 19 local governments. Supplementing these voting members are advisory representatives from Imperial County, the U.S. Department of Defense, Caltrans, San Diego Unified Port District, Metropolitan Transit System, North County Transit District, San Diego County Water Authority, Southern California Tribal Chairmen's Association, and Mexico. Policy Advisory Committees assist the Board of Directors in carrying out the agency’s work program. The Board of Directors is assisted by a professional staff of planners, engineers, and research specialists.