If you've ever ridden a bus in a city -- it doesn't really matter which one -- you know that the engine and transmission situated beneath the floor can get excruciatingly loud, both inside and outside ...

Engines on 37 New Flyer buses bought by Sound Transit in 1999 have been so unreliable they will have to be replaced far earlier than expected. The Detroit Diesel engines have been such a maintenance ...

Engine sound has long been treated as a performance metric, a kind of acoustic dyno sheet that tells drivers how hard a car is working. As digital audio and electrification spread, engine sounds are ...

Last year London's 8,000 or so buses traveled 279 million miles and completed 2.23 billion journeys – more than half of all bus trips completed in England. But they're not green enough. Yet. According ...

School buses are built to be a safe and durable mode of transportation for students around the world. But have you ever wondered what powers these buses? While the outside of a school bus hasn't ...