School busses are based on diesel or gasoline internal combustion engines for the most part and have 12VDC (or maybe 24VDC as used in larger trucks) systems for starter and lighting.
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School busses are based on diesel or gasoline internal combustion engines for the most part and have 12VDC (or maybe 24VDC as used in larger trucks) systems for starter and lighting.
24-Volt Vehicle SystemsThese higher voltage electrical systems are common in commercial, industrial and military vehicles for these reasons. These vehicles typically use diesel engines with high compression, so powerful starters are required. Reliability is increased due to fewer problems with voltage drops.
Most modern diesel trucks use a parallel-joined battery set up in a 12-volt system. A parallel connection means that both the positive and the negative terminals of each battery is connected to the others, meaning that the wiring has a criss-cross appearance.
— Getting more electric school buses into operation could come from converting older internal combustion engine (ICE) models to an electric motor. This option has been put forward as a cheaper, and possibly quicker, alternative to buying a new electric bus outright.