Honda patents smart door braking system

Honda has filed a patent for a device that can stop vehicle doors from opening too quickly or hitting obstacles when a danger is detected. The system aims to improve safety for drivers, cyclists, and pedestrians by preventing sudden door movements in risky situations.

How the system works

The technology uses a combination of sensors, software, and a mechanical brake. An accelerometer measures how fast the door is opening, while another sensor checks the surrounding area for obstacles. If a collision risk is detected, the system engages a brake made of pads, levers, and springs to slow the door down immediately.

Adaptive design with minimal interference

Unlike traditional door rods that provide constant resistance or fully automated doors that add weight and complexity, Honda’s system offers variable resistance only when needed. This makes it a practical middle ground, reducing the chances of mechanical issues and keeping the door’s operation as smooth as usual.

Patent filing and future production

In 2024, Honda submitted the patent to the USPTO, and it was recently published under the number 20260035976. However, a patent does not guarantee that the technology will be produced or sold. Many companies file patents to explore ideas or protect innovations, but few ever reach the market.

Potential delays and safety considerations

Given recent issues with electronic doors, including malfunctions and a lack of mechanical backups, Honda may take time before rolling out the system widely. If implemented, the company is expected to include a manual option to ensure users can open doors without relying solely on automation.