Skip navigation to main content.
NREL - National Renewable Energy Laboratory
About NRELEnergy AnalysisScience and TechnologyTechnology TransferTechnology DeploymentEnergy Systems Integration

St. Louis Metro

The Fleet Test and Evaluation and Nonpetroleum Based Fuels teams worked with the National Biodiesel Board and St. Louis Metro (Metro) to test and evaluate the extended in-use performance of B20 in transit buses. Fifteen 40-foot, model-year 2002 transit buses manufactured by Gillig and equipped with Cummins ISM engines were evaluated in this project; eight operated on B20, while seven ran on ultra-low sulfur diesel.

Located in St. Louis, Missouri, Metro maintains a fleet of 433 buses, 77 light-rail vehicles, and 125 paratransit vans. In 2005, Metro transported more than 4.65 million passengers throughout the St. Louis metropolitan area.

The results of this 12-month final report are featured in St. Louis Metro Biodiesel (B20) Transit Bus Evaluation.