Automated Guideway Transits (AGTs) have several advantages
over traditional train and bus transit networks. AGTs are fully automated, driverless, electricity-powered transit systems. The automation allows them to reduce human
error and operational costs. They have a smaller footprint than diesel trains
or buses. They utilize rubber tires, which give them more flexibility on a
track, reduce noise, and reduce friction and vibration. Their smaller size
allows them to be built above or around existing roads or buildings, reducing
land acquisition costs and construction times.
Mitsubishi Heavy Industries
(MHI) is a major manufacturer of AGTs. They are in operation around the globe,
particularly at airports.
“As a systems integrator, MHI builds not only the track
and rolling stock but can also handle the signaling, power supply, platform
doors and automated fare collection.”
MHI recently released a new
AGT model called Prismo. It was the first new AGT released in a decade.
“The key innovation (literally) driving Prismo is an
onboard energy storage system – basically a high-density, high-power battery
that can recharge in seconds. This means Prismo does not need a power rail
between stations, since the train recharges each time it stops at a station and
during breaking.”
“Not only does this yield a 10% energy saving during
operation. No longer having to build the power rail between stations required
by all previous AGTs and with a newly adopted single guiderail, the entire
system is slimmer and simpler to build, leading to significantly reduced
infrastructure construction costs. And because the power is onboard, Prismo
will always make it to the next station, while predecessors risked being
stranded if their power rails failed.”
The use of lighter construction materials such as aluminum alloys increases energy efficiency. Operation is low decibels, much quieter than diesel systems.
MHI utilizes advanced manufacturing methods such as friction stir welding that join panels without the need for solder. They build them at their Mihara plant in Japan, which began in the 1940s, building steam trains and air braking systems. The plant now runs on 100% renewable energy with a solar farm onsite.
Along with AGT use at
airports, they are used as metros and high-speed rail systems. They are
deployed all over the world.
References:
More
eco-friendly and flexible: Prismo pioneers modern transit systems. Daniel
Bogler. Spectra. Mitsubishi Heavy Industries. June 24, 2025. More
eco-friendly and flexible: Prismo pioneers modern transit systems | Spectra by
MHI
Prismo
- Designed For the Future of Sustainable Mobility. Mitsubishi Heavy Industries.
Prismo -
Designed For the Future of Sustainable Mobility | Mitsubishi Heavy Industries
Mobility
Achievement. Mitsubishi Heavy Industries. Mobility
Achievement | Mitsubishi Heavy Industries
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