Honda FCX Clarity - Safety

Protecting occupants and pedestrians; and the proper handling of hydrogen

Striving to protect vehicle occupants

To enhance occupant crash protection, Honda has implemented innovative body technology with a network of frame structures in the front of the vehicle along with additional safety precautions appropriate to a fuel cell vehicle. The vehicle complies with government collision safety standards, including for full frontal collisions up to 35 mph, MBD side-impact collisions up to 33.5 mph, pole-side impact collisions up to 18 mph, and rear-offset collisions up to 50 mph. The fuel cell system and hydrogen tank are protected from collisions at every angle.

A body designed for the V Flow platform with the rigidity to withstand collisions from all angles

Taking full advantage of the distributed powerplant layout, we've optimized the body structure. To help protect occupants in the event of frontal collisions, the straight front side frame, upper frame, and lower structural parts are designed to disperse and absorb impact energy. Energy is dispersed through the front pillars and floor. The lower structural members are designed to help prevent misalignment with the impact-absorbing parts of the other vehicle. Along with an energy-absorbing upper frame, they efficiently disperse energy over a wider area. This design is intended to both reduce the impact forces on FCX Clarity occupants as well as on the other vehicle. The enhanced rigidity of the body also helps provides a premium level of comfort for all occupants.

The impact-absorbing front-end design helps enhance pedestrian protection

To help protect pedestrians, we've designed the FCX Clarity's fenders, hood hinges, wiper pivots, and other components to more efficiently absorb collision impact.

Braking and seat belt control help protect occupants against injuries from rear-end collisions, while the Collision Mitigation Brake System and seatbelt Automatic Tensioning System provide enhanced safety for the driver and front passenger.

Advanced safety technology protects occupants

  • Side-curtain airbag system
  • Driver and front passenger SRS airbags
  • Active front seat head restraints
  • Driver and front passenger seat belt reminders
  • Side airbag system
  • Impact-absorbing interior
  • Three-point, load-limiting, automatic tensioning system-equipped ELR seat belts for driver and front passenger

Safety measures for handling hydrogen and high-voltage electricity

Sensors are located throughout the vehicle to provide a warning in the unlikely event of a hydrogen leak. Should such a leak occur, a ventilation system is activated and an automatic system closes the main cut-off valves on the hydrogen tanks or supply lines as necessary. The high-voltage lines are electrically isolated. Sensors provide a warning in case of grounding. In the event of a collision, high-voltage contactors shut down the source power line. Repeated flood and fire testing have confirmed a very high level of safety and reliability.

Hydrogen refueling safety measures

To prevent reverse flow from the tank, the hydrogen filler inlet has an integrated check valve. The fuel intake mechanism is also designed to prevent contamination by other gases or the connection of nozzles designed for hydrogen stored at incompatible pressure levels.

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