CBOSS PTC Project
Caltrain is currently working on the Caltrain Communications Based Overlay Signal System (CBOSS) Positive Train Control (PTC) Project to develop a new advanced signal system. The Caltrain CBOSS PTC Project will meet two specific criteria:
- Meet the Federal mandate to implement PTC by 2015; and
- Increase system capacity to allow for future increases in ridership demand.
Benefits from PTC
The Caltrain CBOSS PTC Project will include PTC requirements as federally mandated by the Railroad Safety Improvement Act of 2008, which requires the installation of PTC on all commuter railroads and some freight railroads by 2015. PTC helps to eliminate train-to-train collisions and over-speed mishaps (trains exceeding the civil speed limit). The train will be automatically stopped when there is a violation of speed or when there is a violation of route. It also provides additional safety for railroad workers on the tracks and requires interoperability between all rail services operating on the same tracks. This interoperability assures compliance among all vehicles using the same tracks with the PTC system. This is important for Caltrain as other operators on Caltrain tracks include commuter rail, freight, and future high-speed rail.
Additional CBOSS Benefits for Caltrain
The Caltrain CBOSS PTC Project also specifies additional capabilities to enable increased safety and operating performance for Caltrain and future high-speed rail service. These additional benefits include:
- Increased operating performance of the current signal system, enabling more frequent and more dependable passenger service to meet growing demand.
- Improved grade crossing warning functions.
- Integrated communication among all subsystems (such as the central control facility, train and wayside) for improved safety performance for highway vehicles and the riding public.
- Safe operations between Caltrain and other tenant railroads including future high-speed rail.
The most crucial factor constraining the current capacity Caltrain is the wayside signal system. In early 2008, Caltrain began the Caltrain CBOSS PTC Project to develop advanced signal system requirements that include PTC core safety functions and operational performance enhancements to overcome the constraints imposed by the current conventional wayside signaling and crossing warning systems to enable future service increases.
Electrification & High Speed Rail Benefits
The Caltrain CBOSS PTC Project will be designed to work with Caltrain's existing diesel-based service and will also be compatible with future plans to electrify the Caltrain system. The Caltrain CBOSS PTC Project allows Caltrain to fully utilize the high-performance capabilities of its future electric-powered fleet. Caltrain is also working in coordination with the California High Speed Rail Authority to ensure that the project is compatible with future high-speed rail service. California voters approved the high-speed rail bond proposition on Nov. 4, 2008, and state high-speed rail officials have designated the Caltrain corridor as the alignment between San Jose and San Francisco.
- Critical design: Fall 2012 - Summer 2013
- Final design: Summer 2013 - Fall/Winter 2013
- Installation and testing: Fall 2013 - Fall 2015
- Begin revenue service: October 2015
|PTG Base Contract with Fiber Option||
|JPB Project Management Oversight and Other Direct Costs (ODCs) including Taxes and Facility Lease||
|Options and Allowance (Spectrum purchase, additional Warranty, spares, etc)||
To implement the project, Caltrain will be identifying utility lines, digging a small trench, and/or boring close to the tracks to install a fiber optic cable. In order to maintain daytime train service, Caltrain will be performing some of this work at night.
View the CBOSS PTC photo gallery HERE.
Belmont and San Carlos
Day work will occur July 28 – August 1 from 7 a.m. to 5 p.m. to identify utility lines. Crews will work as quietly as possible.
Redwood City and Menlo Park
Day work will occur July 28 – August 1 from 7 a.m. to 5 p.m. to pull inner-duct through existing conduit in the ground and install/test fiber optic cable. Crews will also test fiber optic cable on the Dumbarton Spur. Crews will work as quietly as possible.
Santa Clara and San Jose
Day work will occur July 28 – August 1 from 7 a.m. to 5 p.m. to pull inner-duct through existing conduit in the ground and install/test fiber optic cable. Crews will also continue installation of a base station. Crews will work as quietly as possible.
Unincorporated San Mateo County, Atherton, Palo Alto, Mountain View, Sunnyvale
Day work will occur July 28 – August 1 from 7 a.m. to 5 p.m. to pull inner-duct through existing conduit in the ground and install/test fiber optic cable. Crews will work as quietly as possible.
General Project Fact Sheet
Data Communications Subsystem Installation Fact Sheet
Noise and Light Installation Fact Sheet
CBOSS PTC FAQ
LPMG CBOSS PTC Installation Update Presentation 3.27.14
LPMG CBOSS PTC Installation Update Presentation 9.26.13
JPB CBOSS PTC Installation Presentation 9.5.13
LPMG CBOSS PTC Installation Presentation 8.22.13
LPMG CBOSS PTC Overview Presentation 3.28.13
JPB CBOSS PTC Presentation
Advanced Signal System Notice San Mateo July 2014
Advanced Signal System Notice Belmont July 2014
Advanced Signal System Notice San Carlos July 2014
Advanced Signal System Notice Menlo Park Campbell Ave. June 2014
Advanced Signal System Notice San Mateo Base Station June 2014
Advanced Signal System Notice Menlo Park May 2014
Advanced Signal System Notice Sunnyvale Committee Meeting April 2014
Advanced Signal System Redwood City March 2014
Advanced Signal System Notice Unincorporated San Mateo County March 2014
Advanced Signal System Notice Menlo Park March 2014
Advanced Signal System Notice Palo Alto March 2014
Advanced Signal System Notice Sunnyvale March 2014
Advanced Signal System Notice Santa Clara March 2014
Advanced Signal System Notice San Jose March 2014
Advanced Signal System Notice Atherton February 2014
Advanced Signal System Notice Mountain View February 2014
Advanced Signal System Notice Menlo Park Station
Advanced Signal System Notice Redwood City
Advanced Signal System Notice Unincorporated San Mateo County
Advanced Signal System Notice Atherton
Advanced Signal System Notice Menlo Park
Advanced Signal System Notice Palo Alto
Advanced Signal System Notice Mountain View
Advanced Signal System Notice Sunnyvale
Advanced Signal System Notice Santa Clara
Advanced Signal System Notice San Jose
Caltrain Modernization Video (CBOSS PTC mention):
Electrification and the Future of Caltrain
Caltrain Modernization Kicks Off Advanced Signal System Work
Community Leaders Rally Support for Caltrain Modernization’s $20 Million Grant Application
Federal Grant Move Modernization of Caltrain Corridor Forward
Capital Project Links
Advanced Signal System