PORTLAND, Ore. — Portland Public Schools began running its first propane-powered Type A school buses in October. The five buses were manufactured by Collins Bus Corp. and delivered to the district by the manufacturer’s Oregon-based distributor, Western Bus Sales.
“Portland Public Schools started using propane buses in 1983 because of concerns about increasing conventional fuel prices and stricter air quality regulations,” said Portland Interim Director of Student Transportation Andy Leibenguth. “Today, virtually all of our 325-plus district-owned and contracted buses run on propane. Up to now, our small buses were not available directly from a manufacturer — they had to be converted to propane by local vendors after purchase. We are thrilled that Collins and Western Bus Sales now offer Type A school buses with dedicated propane engines.”
The Collins’ NexBus propane-powered Type A unit is built on a dual rear-wheel General Motors chassis. It exhibits excellent cold-weather starting, has a range of 300 miles and is available in capacities of up to 32 passengers, according to the company. The buses delivered to Portland Public Schools are 18-passenger models.
“We applaud Portland Public Schools for being among the first in the country to recognize the operational and environmental benefits of propane-fueled vehicles. They continue to set a powerful example for students and the community with their smart, responsible transportation choices,” said Kent Tyler, president of Collins Bus Corp. “Collins Bus is committed to providing our customers with cost-effective, alternative-fuel solutions straight from the factory where safety, reliability and quality are built in from the ground up. With partners like Western Bus Sales, Collins is uniquely positioned to serve the alternative-fuel needs of environmentally-conscious school districts, contractors and government customers throughout North America.”
The advantages of liquid propane-fueled buses have been well documented by Portland Public Schools and other school districts across the country. Some of the benefits are:
• The average fuel cost can be up to 50 percent less than gasoline or diesel.
• Vehicles fueled by propane require less maintenance and last almost twice as long as those powered by conventional fuel.
• Propane burns cleaner than gasoline or diesel, with up to 20 percent less nitrogen oxide, up to 60 percent less carbon monoxide, 24 percent fewer greenhouse gas emissions and fewer particulate emissions than gasoline.
• Propane meets all federal safety standards and propane tanks are 20 times as puncture resistant as gasoline tanks.
• Propane is readily available. In addition to existing private fleet fueling arrangements, there are hundreds of public refueling stations for propane in Portland.
In addition to propane-powered buses, Collins Bus Corp. also produces the NexBus hybrid, which runs on hybrid-electric technology. For more information about Collins’ alternative-fuel transportation solutions, visit www.collinsbuscorp.com.
Propane Type A buses delivered to Oregon district
Portland Public Schools is running five NexBus units from Collins Bus Corp. that are powered by the alternative fuel. The manufacturer says that the buses exhibit excellent cold-weather starting and have a range of 300 miles.
More Alternative Fuels

Alt-Fuel Moves: Racking Up Miles & Scaling Up Fleets
Electric school buses are hitting the road in greater numbers as fleets expand, infrastructure catches up, and mileage accumulates.
Read More →
Virginia Clean Cities Celebrates 30 Years, Highlights Award Winners in School Bus Innovation
At its annual rally, the organization spotlighted propane and electric school bus advancements while recognizing leaders driving forward-looking student transportation.
Read More →
Alt-Fuel Moves: Funding & the Road to Electrification
From federal oversight fixes to state funding milestones and district deployments, the transition to cleaner school transportation continues to advance.
Read More →
Thomas Built Buses Adds Gasoline Engine Option to Saf-T-Liner C2 School Bus Lineup
The gasoline-powered bus features the Cummins B6.7 Octane engine and industry-first compression brake, joining the OEM's C2 powertrain lineup for 2026.
Read More →
Data-Driven School Bus Maintenance Guide
Stop reacting to engine lights and start predicting them. This guide reveals how transitioning from a "break-fix" model to a data-driven maintenance strategy can drastically reduce fleet downtime and protect your district's budget. Learn how to transform your garage operations from a cost center into a reliability powerhouse.
Read More →
InCharge Energy Plugs Into Canada with New Key Partnerships
InCharge Energy has expanded into Canada through partnerships with RocketEV and Foreseeson, aiming to deliver end-to-end EV charging infrastructure and support for fleet and public-sector customers.
Read More →
Report: Canada's Transition to Electric School Buses Lags Behind Goals
Canada’s first electric school bus report card finds that most provinces are failing the transition away from diesel buses used for student transportation.
Read More →
Alt-Fuel Moves: EV Charging Expansion & Fleet Deployments
From EV charging growth to V2G testing and new bus deployments, districts and providers advance alt-fuel goals amid challenges.
Read More →2026 School Bus Fleet Vendor Directory & Buyer's Guide
Searching for the right equipment, technology, or services for your school transportation program? This industry guide brings together manufacturers and suppliers across the entire school bus market, all in one place. Download it to find the partners who can help move your operation forward.
Read More →
EPA Revamps Clean School Bus Program, 2024 Rebates Halted
The EPA will open a 45-day comment period and is planning a March 3 webinar as it reshapes Clean School Bus funding for 2026.
Read More →
