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Case Studies

View featured case studies and success stories, or use the search tool to explore more alternative transportation technologies, including alternative fuels, advanced vehicles, and regulated fleets.

A sheriff patrol vehicle with its hood up, exposing its engine, is parked next to a fueling dispenser labeled “PROPANE VEHICLE FUEL” and “NO SMOKING.”

Inside a Central Florida Sheriff’s Office Bi-Fuel Propane Fleet Program

For more than a decade, the Polk County Sheriff’s Office has operated a bi-fuel propane fleet program designed to reduce fuel costs and extend driving range for patrol operations across 2,010 square miles in central Florida.

A layer of geosynthetic clay liner is installed at Seneca Landfill in Pennsylvania. This liner is part of a liner system that captures methane, which is processed into renewable natural gas to fuel the company's waste collection trucks.

Renewable Natural Gas from Landfills Can Reduce Fuel Costs and Increase Independence

Vogel Holding in western Pennsylvania has turned trash into energy by capturing methane from its Seneca Landfill and processing it into renewable natural gas to fuel the company’s waste collection trucks.

Three men stand in front of a heavy-duty diesel vehicle that they are fueling with renewable diesel. Text on the vehicle reads “City of Oakland Streets & Sidewalks.”

Renewable Diesel in Oakland, California, Demonstrates Cost-Effectiveness of Drop-In-Ready Fuel

Renewable diesel is a drop-in-ready fuel that fleet managers can use to improve efficiency for little to no additional cost, which is why the city of Oakland, CA, began shifting diesel vehicles to renewable diesel in 2015.