No, an electric school bus isn't as exciting as an electric Porsche or Lotus, but in the grand scheme of things, it's probably a lot more important. Case in point – a fleet of such buses are scheduled to hit the road in California next year, with each vehicle saving its school district a claimed 16 gallons (60.5 L) of fuel per day, adding up to US$11,000 in fuel savings per year.
The battery-powered SST-e buses were created in a collaboration between school bus manufacturer Trans Tech Bus and Motiv Power Systems. Kings Canyon Unified School District, in the San Joaquin Valley, will be the recipient of the first vehicles off the line.
The SST-e is built around the existing Ford E450 truck chassis, utilizing Motiv's electric Powertrain Control System. That system is said to be compatible with a wide variety of chassis and battery types, meaning that few modifications are required to the stock chassis, and that better-performing batteries can be swapped in as technology advances.
Although little is available in the way of specs, the buses will have a range of 80 or 100 miles (129 or 161 km), depending on whether they're equipped with four or five battery packs – any one of those packs can be replaced without having to replace all the others. The batteries can be charged to 50 percent capacity in less than an hour, while a full charge takes eight hours. They utilize a 3-phase fast charging system that "requires minimal building modifications and no expensive charging stations."
The Type A bus can carry up to 32 students, or 24 students and one wheelchair. Thanks to a built-in telemetry system, the location of each bus can be monitored remotely, as can its maintenance needs and its driver's performance.
Source: Motiv Power Systems via Clean Technica
I'm guessing many kids, like myself used the distant sound of the school bus stopping and starting as a final-call alarm clock letting you know that you really need to get your arse out of bed!!!
Same for many pickup trucks who adopted the right side pipe from the race track.
I knew an engineering prof at Munich Technical University who was fond of saying that every other engineer ought to be lined up and shot. He has a point.
2. What kind of fuel is used to produce that electricity?
3. Do the electric vehicles cost more than the gasoline vehicles, and if so how much more and how much more per mile traveled?
4. What are the comparative costs of battery replacements and handling and maintenance compared to maintenance costs of gasoline or diesel bus?
5. What are the costs of any subsidies received by the buses?
So far the only message of this story is that California is using electric school buses. Is it another politically correct money hole for the state or a true economy?
Of course, heat and air aren't as important in California, but how are these buses going to fare in the rest of the country? Even though kids make good space heaters, I seriously doubt we want to rely on that for, say, a Minnesota winter.