Honda Plans 2027 Road Tests for Wireless Charging While EVs Move

Honda plans to begin public-road demonstrations in fiscal 2027 of pavement that can wirelessly supply electricity to moving electric vehicles. The prospect is straightforward vehicles could gain energy without stopping but the next tests must establish whether the embedded equipment can deliver useful power safely and survive the repeated loading of real traffic.

The system has completed initial checks at a private facility, not a commercial deployment trial. Honda R&D, Taisei Corporation and Taisei Rotec Corporation said in their development announcement that demonstrations are planned from Japan’s 2027 fiscal year, which starts April 1, 2027. Their intended participation in an East Nippon Expressway Company project on the Tateyama Expressway will move the work from a controlled test site toward public-road conditions.

Power equipment built into the pavement

The design uses magnetic coupling rather than a physical electrical connection. Transmitter equipment embedded in the road creates a magnetic field, while a receiver installed on the vehicle converts the transferred energy into usable electrical power.

Each partner is responsible for a different part of that chain. Honda supplies the high-power-density transmitter and vehicle-mounted receiver units. Taisei provides the responsive direct-current power supply, while Taisei Rotec contributes the methods for embedding the equipment in pavement.

A significant integration choice is the combination of an inverter and transmitting coil within each ground unit. Multiple units are connected through direct-current distribution. According to the companies, that architecture reduces the number of components and simplifies wiring in the embedded portions of the system.

The units are also designed to fit into channels cut by standard road-milling equipment. That could allow installation in existing pavement or during future resurfacing instead of requiring complete reconstruction of a road from its foundation. It does not, however, establish the installation time or cost. Neither figure has been disclosed.

Facility checks cleared only the first gate

Testing at Taisei Group’s T-FIELD facility in Satte verified system stability and the structural durability of the pavement design. The structures were developed for traffic that includes commercial vehicles weighing about 20 tonnes.

Those results establish that the partners have built and exercised an integrated road-and-power system. They do not demonstrate long-term public-road durability, measured charging efficiency at 150 kilowatts or acceptable control of electromagnetic-field leakage. All three remain subjects of planned testing.

A more demanding test road is scheduled to be constructed at T-FIELD Tamura starting in late 2026. The program calls for loading equivalent to one million wheel cycles using actual vehicles. Engineers will also evaluate wireless power-transfer performance and measures intended to limit electromagnetic leakage.

The partners then plan to verify operation at outputs of up to 150 kilowatts for potential use with large commercial vehicles, including performance while vehicles travel at high speed. That number is a test target, not a demonstrated charging rate or efficiency result. The amount of energy a vehicle actually receives will depend on measured transfer efficiency and how long it remains over an energized road section.

Freight is the initial use case

Honda envisions compatibility with passenger cars as well as heavy commercial vehicles, but its first practical focus is logistics and transport. That boundary matters. Fleets often run predictable routes, and reducing stationary charging time could support more continuous operations. A defined freight corridor may also concentrate the infrastructure where compatible vehicles use it repeatedly.

Broad passenger-car adoption would require more than durable pavement. Vehicles would need compatible receivers, while road operators and automakers would need workable approaches to interoperability, installation, maintenance and power control. The companies have not provided deployment costs, installation durations, compatibility standards or a commercial rollout date.

The coming test sequence is therefore as much about road engineering and systems integration as charging power. Embedded electronics must coexist with heavy wheel loads, pavement renewal, electrical distribution and electromagnetic-safety requirements. Honda’s concept has cleared its initial facility checks; the million-cycle test and the 2027 public-road demonstration will determine whether it can advance from a functioning test system to credible transport infrastructure.

By Thomas Caldwell — AMI’s senior editor for mechanical and mobility engineering, covering vehicle electronics, systems integration, electrification, chassis systems, propulsion, and safety policy.