Preparing Your Transit System for a Changing EV Fleet
What every transit maintenance manager should know
By Halsey King , SAE , NTEA , MSMBA
The Times , They Are A-Changin ’ As we look to the future of transit systems , it ' s essential to understand the rapid advancements in motive power technology . Many of us can recall the significant changes in motive power over the years , from the first cars we drove to the first airplanes in which we flew . Motive power has evolved from coal and wood-fired engines to steam engines , electric motors , propane , diesel , gasoline , and compressed natural gas ( CNG ). Each of these advancements has brought new challenges and opportunities . In the 1970s and 1980s , we saw a shift towards CNG , and many of the technologies from that era are still in use today . It ' s crucial to prepare for the changing transit fleet , as these changes will impact your work environment , crew , tools , and overall safety .
A Brief History of Electromotive Power Electromotive platforms have been a cornerstone of transportation since the 1930s , with early applications in locomotives and submarines . These early trains were powered by diesel , gas , and propane , which drove generators to provide electric power for traction motors . This concept remains relevant today , albeit with more precise technology and smaller hardware . The introduction of hybrid buses marked another significant change . Hybrids , which combine internal combustion engines with electric motors , have proven to be reliable and efficient . Along with other platforms , hybrids continue to play a vital role in moving people across the country .
The Rise of Battery Electric Buses ( BEB ) The most notable recent advancement is the development of Battery Electric Buses ( BEB ). These buses eliminate the need for an engine and generator , relying solely on a set of batteries , known as the Energy Storage System ( ESS ), to power the motor . BEBs represent the future of transit , offering a cleaner and more efficient alternative to traditional buses .
Preparing for the Transition To successfully transition to a BEB fleet , several key factors must be considered : 1 . Charging Infrastructure : Establish a comprehensive charging plan with your local power supplier . This plan should account for current and future power needs as your BEB fleet grows .
2 . Bus Selection : Purchase buses that meet your current and projected needs . As the population around your facility changes , your fleet requirements will also evolve .
3 . Facility Upgrades : Update your shops and facilities to accommodate BEB fleets . This includes replacing old fuel pumps with new charging stations .
4 . Staff Training : Ensure that your drivers and maintenance staff are well-trained in handling high-voltage systems . Mistakes with electricity can be fatal , so proper training is crucial .
5 . Power Supply Management : Work closely with your Electric Power Supplier ( EPS ) to secure a reliable power source . Understand the variable utility rates and ensure backup power is available in case of storms , floods , or other unforeseen events .
Challenges and Considerations Transitioning to a BEB fleet comes with its own set of challenges . The high voltage in these vehicles ( 700 volts or more ) requires careful handling and strict safety protocols . Additionally , the industry may experience periods of slow growth , similar to what we saw with propane and CNG . However , the long-term outlook for electric buses remains positive .
26 | BUSRIDE . COM | FEBRUARY / MARCH 2025