RobotRisk Autonomous Systems Incident & Risk Register
RobotRisk / other / Nishi Tokyo Bus Co. (Tokyo Metropolitan Government autonomous bus demonstration)

Nishi Tokyo Bus Co. (Tokyo Metropolitan Government autonomous bus demonstration)

Products: automation-operator. Risk band: Low   RobotRisk index 9.0/100 (incidents/exposure, time-weighted) · 21th percentile of 62 other companies.

Analyst brief

The single entry records a December 2025 crash in a Hachioji (Takao) autonomous bus demonstration, traced to a system defect per the Tokyo Metropolitan Government's own announcement, severity 2. The index of 9.1 and 21st percentile place this entity in the lower range of the 'other' category. The finding is government-attributed rather than press-speculated, arising from an official demonstration program with an accompanying recurrence-prevention announcement referenced in the entry. The record is limited to this one event, with no further incidents on file.

Entries by year and severity

012025 S2: 1125
S1S2S3S4S5

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RobotRisk index vs other alternatives

Comparisons over time

RobotRisk index over time

Yearly entries vs category average

crash over time vs category

Incident log (1 unique incidents)

SevDateTypeLocationIncidentSource
S212/2025 crash Hachioji, Tokyo, JapanAutonomous bus accident in Hachioji (Takao) traced to system defect, Tokyo announces recurrence-prevention measures · 1 bus NHK News

Alternatives in other

FordMBTABaiduPalermo's PizzaZoox (Amazon)General Atomics / U.S. Air ForceJohnson & Johnson (Abiomed)Stellantis
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