This page last reviewed on April 18, 2008

The Fleet Rule for Transit Agencies is the California Air Resources Board's effort to reduce both criteria pollutant emissions and exposure to toxic air contaminants from urban buses and transit fleet vehicles. The regulation affects both public transit operators and heavy-duty engine manufacturers.

If you wish to receive notices regarding the California Air Resources Board Fleet Rule for Transit Agencies - Urban Bus Program, please sign-up for the listserve. 

If you wish to receive notices regarding the California Air Resources Board Fleet Rule for Tranist Agencies - Transit Fleet Vehicles Program, please sign-up for the listserve. 

For further information, click on one of the following links. You can scroll down to read recently posted information or click here What's New.

What's New...

April 21, 2008

Fleet Rule for Transit Agencies Mail-Out #MSC-08-09 is now available. California’s transit agencies need to be aware that some diesel engine manufacturers are legally selling engines that do not have high level particulate matter (PM) emission control systems. Because of this, these engines do not provide the emission reductions from 2007 model year and newer engines needed by transit agencies to meet the emission reduction requirements of the Fleet Rule for Transit Agencies.  While most new diesel engines are produced with high level PM emission control systems, some manufacturers are utilizing the averaging, banking, and trading program to certify some engines above the 0.01 g/bhp-hr PM emission standard.

March 7, 2008

Fleet Rule for Transit Agencies Mail-Out #MSC-08-06 is now available. ARB has issued an advisory to remind transit agencies on the Alternative Fuel Path of the requirements associated with introducing new urban buses to their fleet.  Urban buses new to an Alternative Fuel Path fleet, including any leased vehicles, vehicles under contract, and newly purchased or acquired vehicles (new or used), must meet the alternative fuel purchasing requirement of 85% alternative fuel powered urban buses in a calendar year.  This also includes all urban buses provided by private companies under contract to the transit agency.

February 19, 2008

Fleet Rule for Transit Agencies Mail-Out #MSC-08-01 is now available. The Air Resources Board issued an advisory to remind transit agencies, bus manufacturers, and engine manufacturers that vehicles intended for urban bus service in California must continue to be powered by engines certified to the urban bus service class. The advisory is posted under the Policy and Compliance Notification section.