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Clean Hydrogen Partnership

FCEV road collision

Event

Event ID
709
Quality
Description

A collision between two vehicles occurred at the corner of two streets. One vehicle was a fuel cells and hydrogen vehicle (FCEV), the other was a conventional one. Its driver incorrectly did not notice the red traffic sign and proceeded into the intersection where it collided.

Police, fire department, medical service intervened.

Both vehicles sustained "minor to moderate" front-end damage. Nevertheless, the frame of the FCEV vehicle was damaged too significantly to be repaired.
It did not come to any hydrogen release. The FCEV hydrogen and the high-voltage systems shut down upon impact, as designed. To confirm this, a visual inspection of the vehicle was performed, and the vehicle was checked with a sniffer.

Event Initiating system
Classification of the physical effects
No Hydrogen Release
Nature of the consequences
Macro-region
North America
Country
United States
Date
Component involved
FCEV
Failure mode
damage, no release
Initiating cause
impact, rollover, crash
Root CAUSE analysis

The cause of the collision was an error of a driver

Root causes
Date entry in HIAD
30/12/2025

Facility

Application
Road vehicles
Sub-application
FCEV-LDV
Hydrogen supply chain stage
All components affected

car, frame

Process temperature range [C]
ambient temperature (-50°C to +50°C)
Process pressure range [MPa]
medium to high pressure (10 to 50 MPa)
Location type
Open
Location
city
Operational condition

Emergency & Consequences

Number of fatalities
0
Number of injured persons
1
Currency
US$
Property loss (onsite)
100.000
Post-event summary

Very light injuries to one driver. The decalred total loss of the FCEV could be approxiamtely evaluated at 100000 US$

Emergency action

The vehicles were moved out of the intersection. Because of the complete shut down, the FCEV was pushed out of the intersection by the police. The air bag activiated on one of the two vehicles.

Lesson Learnt

Lesson Learnt

This event is classified in HIAD as a near miss from the hydrogen system point of view, but still it was a road incident. The safety systems functioned as designed, because the emergency shut-down procedure activated and the hydrogen in the storage vessels was isolated.

The damage to the frame caused the vehicle to be been retired, but its fuel cells system remained intact and unharmed by the impact of the collision, and could be reused in another vehicle.

Amore generic lesson learnt was the need to conduct refresher training courses for the drivers and local emergency response personnel. Training had already been given, but the event highlighted the fact that emergency response agencies are subject to frequent personnel changes. Therefore, training should be repeated periodically.

In-depth data

Release type
no release
Release temperature [°C]
25
Release pressure [MPa]
35
Probable IGNITION SOURCE

References

Sources categories
H2TOOLS
Reference & weblink

Events in database H2TOOLS
https://h2tools.org/lessons/hydrogen-fuel-cell-vehicle-traffic-accident
(accessed December 2024)