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240 Landmarks TopBuses > Toyota IMTS
 Toyota IMTS
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The most significant characteristic of the Intelligent Multi-Mode Transit System (IMTS) is that it is an autonomous system that runs as much as possible using an on-board control device on the vehicle side as opposed to conventional guided systems that mainly use roadside infrastructure. It is a dual mode system that can be driven automatically and in platoons on special roads, and manually on normal roads as a regular route bus. Functions not available in existing systems that are unique to the IMTS include non-contact guided control that keeps the bus in its lane without 4 guide rails, platoon running without a connector (electronic engagement), and control that prevents collisions with other buses in the platoon using roadside infrastructure, radar, and other on-board instruments in conjunction.
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Storage location:TOYOTA AUTOMOBILE MUSEUM
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Year manufactured:2004
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Manufacturer:Toyota Motor Corporation
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Classification:Used as a transit vehicle at the Aichi World Expo
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Current status:Public display at TOYOTA AUTOMOBILE MUSEUM
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Vehicle name / Manufacture
Vehicle name:Intelligent Multi-Mode Transit System (IMTS)
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Model name:
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Company name:Toyota Motor Corporation
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Year manufactured:2004
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Designed by:Toyota Motor Corporation
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Vehicle type/usage:Route bus (medium distance/medium capacity transportation)
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Location of actual vehicle/replica:Toyota Automobile Museum
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Model / Weight
Style:Low-floor large non-step bus
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Points of interest, topicality:・Dual mode system: Automatic/platoon operation on special roads and manual operation on normal roads. Platoon running can be performed in areas with a large number of users, and manual operation in areas with a small number of users, enabling a balance between transportation capacity and economic efficiency.
・Magnetic markers provided in the special roads are detected on board the vehicle for ascertaining its position. This allows autonomous control by on-board computers of where the bus should stop and start, and of speed
・Roadside infrastructure performs control to prevent collision between vehicles in a platoon.
・Max. number of vehicles in platoon: 3, Maximum speed: 30 km/h, Average speed: 20km/h, Maximum deceleration: 0.2 G, Platoon following distance: several meters during operation, 1.5 m when stopped
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Body / Size
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Body / Axle / Driving / Others
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Engine / Size / Power
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Hybrid
Hybrid system type:None
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Drive-train
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Performance
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Reference materials:Automated Vehicle Control Technologies on Toyota IMTS, Keiji Aoki et al., Toyota Technical Review Vol.51 No.2
IMTS, Keiji Aoki et al., JSAE Chubu Branch Report 2005 No.56
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Vehicle introduction:Roadway detection system: Lane detection accuracy of ±15 mm, lateral direction detection using magnetic lane markers (material: NdFeB) and unidirectional magnetic sensors.
Lane keeping control: Automatically controlled steering so that the bus runs directly over the magnetic lane markers.
Non-contact branching: The magnetic lane markers are divided into those with S- and N-polarity and the on-board systems are used to instruct the polarity for the direction in which the bus should run.
Platoon running control system: Performs vehicle-to-vehicle communication and enables several buses to run as a single group.
Collision prevention control system: Prevents collision with the rearmost vehicle in another platoon, and detects following distances. Distance detection: (1) On-board millimeter wave radar (2) Following distance (platoon-to-platoon communication) (3) Roadside vehicle detection device
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