Technical Evaluation of Options to Reduce Locomotive and Railyard Emissions

This page last reviewed October 18, 2011


ARB Recommendations Document
(September 9, 2009)

Based on the Technical Options Document, staff developed recommendations to implement further locomotive and railyard emissions reductions in which staff identified the highest priority options as five locomotive measures.  Staff has also developed a seperate set of additional recommendations that can support or provide further locomotive and railyard emissions and risk reductions.

Recommendations to Implement Further Locomotive and Railyard Emission Reductions
(PDF - 419k)

Staff Presentation - (PDF - 900k)


In this revised report, the Air Resources Board (ARB/Board) staff provides a technical evaluation of 37 options that may accelerate further statewide locomotive and localized locomotive and non-locomotive railyard emission reductions.  The technical evaluation of each option is based on the following criteria:  technical feasibility, potential emission reductions, costs, and Carl Moyer Program cost-effectiveness. The overall purpose of this document is to provide a sound technical basis for the ongoing dialogue on how best to achieve further emissions reductions of oxides of nitrogen (NOx) and diesel particulate matter (PM or diesel PM) from locomotives and railyard sources.

This revised report is intended only to provide a technical assessment of various options that are available or may be available in the near future to accelerate and provide additional emissions reductions from locomotives and major railyards in California.  It is not intended to serve as an implementation blueprint, as it does not evaluate which agency or agencies may have authority to implement such options.  The document also does not evaluate what role, if any, the availability of public funding might play in assuring earlier or further reductions.

Staff also acknowledges that the data used in this report represents a snapshot in time.  Elements such as locomotive fleet composition data are fluid and are influenced by many factors.  In addition, other data used to evaluate technological feasibility, potential emission reductions, and costs are also fluid and subject to change.  The staff expects to provide updates as technology developments and demonstration project results warrant.
Revised Technical Options Document
(August 31, 2009)


Technical Options to Achieve Additional Emissions and Risk Reductions from California Locomotives and Railyards
(Report: 
PDF - 2.9mb )

      Executive Summary (PDF - 53k)

      I.  Introduction (PDF - 150k)

      II.  Locomotive Options (PDF - 358k)

      III.  Railyard Options (PDF - 250k)

      IV.  Advanced Systems Options for Locomotives and Railyards (PDF - 570k)

      V.  Railyard Operational and Physical Changes (PDF - 97k)

      Appendices (PDF - 1.5mb)

Draft Report: For More information... (December, 2008)

preload