The familiar ritual of pulling off the highway and plugging in an electric vehicle could eventually become less important—at least on roads equipped with Honda’s latest experimental technology. Honda says it has developed the foundation for a system capable of wirelessly supplying electricity to EVs while they continue moving.
The technology places transmitting equipment beneath the pavement and receiving hardware on the vehicle, allowing electrical energy to cross the gap without a physical cable. Honda is developing the system with Taisei Corporation and Taisei Rotec, initially focusing on commercial transportation. A more demanding test is already planned: the companies are preparing to participate in a roughly 300-metre demonstration on Japan’s E14 Tateyama Expressway from fiscal 2027 onward. It is a serious step toward electric roads, but still very much an experiment rather than a technology ready for ordinary Honda customers.
Honda Has Been Working Toward This Since 2021
Honda calls the technology Dynamic Wireless Power Transfer, or DWPT. Although the October 2026 announcement makes the project sound futuristic, the company says it has been researching dynamic wireless power since 2021. Its more recent collaboration with Taisei Corporation and road-building specialist Taisei Rotec began in 2025, bringing together vehicle engineering, electrical infrastructure and pavement expertise that one automaker could not easily supply alone.
The objective is straightforward even if the engineering is difficult. Instead of relying entirely on energy carried inside a large battery, an appropriately equipped electric vehicle could receive electricity from sections of roadway as it travels over them. Honda says this could reduce how often EVs need to stop at a charger. The company is not claiming that every future road will continuously recharge every EV, however. Only vehicles fitted with compatible receiving equipment can use the system, and the roadway itself has to contain specialized transmitters and electrical infrastructure.
The Road Essentially Becomes a Giant Wireless Charger
The basic principle resembles wireless phone charging, except the charger is buried underneath a road and the receiver is attached beneath a moving vehicle. Honda’s system uses magnetic coupling. Ground assemblies embedded in the pavement generate a magnetic field, while a vehicle assembly converts the transferred energy into electricity that can be used by the vehicle. International technical specifications already recognize magnetic-field dynamic wireless power transfer as a method of supplying energy to a moving EV’s rechargeable storage system or other onboard equipment.
Honda divides its system into three major parts. There is a ground-based DC power supply, a network of transmitting units embedded in the pavement and a receiving unit installed on the vehicle. Multiple road units are connected through DC distribution. The vehicle does not need a plug to make contact with the road. When everything operates correctly, energy moves across the physical air gap electromagnetically. It sounds simple when compared with a phone charging pad; maintaining reliable high-power transfer underneath a fast-moving truck is considerably harder.
Three Companies Are Solving Three Different Problems
Honda is not attempting to turn ordinary pavement into charging infrastructure by itself. Honda R&D is responsible for the road-mounted transmitting system and the vehicle hardware that receives electricity. Taisei Corporation is developing the high-response DC power supply needed to feed those road units. Taisei Rotec, a company experienced in road construction, is responsible for developing practical methods of placing the equipment inside pavement.
The companies are also working jointly on pavement durability, equipment replacement methods and power-transfer testing. That division of responsibilities illustrates why dynamic charging is fundamentally different from installing another roadside fast charger. A conventional charging station can be constructed beside a road. A dynamic system becomes part of the road itself. Honda says its transmitting units have been designed so existing pavement can be milled and the equipment embedded into it. Simplifying underground wiring is another priority because any system intended for widespread deployment would eventually need maintenance without turning every repair into a major reconstruction project.
The Road Has to Survive Heavy Trucks Too
Transferring electricity is only half of the challenge. The equipment must continue functioning after thousands of heavy vehicles repeatedly drive over it. Honda says its development work is aimed at pavement capable of accommodating commercial vehicles weighing around 20 tonnes. That means the embedded electrical components cannot compromise the road structure, deform excessively or become vulnerable after years of loading, temperature changes and maintenance.
Starting in late 2026, Honda and its partners plan to build another test roadway at Taisei Group’s T-FIELD/TAMURA facility. Honda says the durability program will include loading equivalent to one million wheel passes using a reference wheel load of 49 kilonewtons. Researchers will simultaneously evaluate wireless-power performance and methods of controlling electromagnetic-field leakage. The combination is important. A prototype that transfers electricity impressively for a demonstration but damages the pavement—or fails after repeated truck traffic—would have little value to a highway operator responsible for keeping a major route open year after year.
The 2027 Test Moves the Technology Onto an Actual Expressway
The more significant milestone comes from NEXCO East, one of Japan’s major expressway operators. Its Tateyama Project is intended to test dynamic wireless power transfer under real traffic conditions on the E14 Tateyama Expressway in Chiba Prefecture. Testing is planned to take place multiple times from Japanese fiscal year 2027 onward. Japan’s fiscal 2027 begins April 1, 2027, so describing the project simply as a “2027 test” leaves out an important timing detail.
The experimental area will be near the Kimitsu parking area and cover roughly 300 metres of the expressway’s main line. NEXCO East describes the project as an effort to evaluate wireless charging in an actual expressway environment rather than on a closed laboratory track. Honda R&D and Taisei form one participating team. Toyota, Denso and Obayashi form another. The highway project therefore is not exclusively a Honda demonstration; competing engineering approaches will be participating in the broader program.
Honda Is Targeting as Much as 150 kW
Honda says future development will include testing power levels as high as 150 kilowatts, particularly with large commercial vehicles in mind. That is substantial power, but it should not be interpreted as a promise that every vehicle will continuously receive 150 kW throughout the 2027 highway experiment. Honda describes 150 kW as a target for further performance verification as engineers work toward practical heavy-vehicle applications.
There is evidence that highway-speed wireless transfer at similar or higher power levels is technically possible. Purdue University and the Indiana Department of Transportation successfully delivered 190 kW wirelessly to an electric heavy-duty truck travelling at 65 mph, or about 105 km/h, during testing on a quarter-mile electrified highway segment. That system is different from Honda’s, so its performance should not be transferred directly to the Japanese project. It does provide useful context: supplying truck-scale power through pavement while a vehicle is travelling at highway speed has moved beyond computer simulation and into real-world experimental testing.
Trucks Could Benefit Before Everyday Passenger Cars
Honda says logistics and transportation are its initial targets rather than immediately promising wireless roads for everyday commuters. Heavy commercial vehicles are an understandable place to start. Long-distance electric trucks require substantial amounts of stored energy, and larger batteries add weight, take up space and contribute to vehicle cost. Stationary charging can also create downtime for fleets whose economics depend heavily on keeping vehicles moving.
Research involving Natural Resources Canada has found dynamic charging particularly promising for long-haul trucking, although infrastructure cost remains a major barrier. Other studies have similarly examined whether electrified-road segments could let operators use smaller batteries while maintaining long-distance capability. Honda’s vision follows the same logic: electricity supplied during the trip could reduce dependence on enormous onboard energy reserves and lengthy charging stops. That does not mean trucks could abandon batteries completely. They still need stored energy for warehouses, local roads and any stretches of highway without wireless infrastructure. Electrified roads would supplement the battery rather than eliminate it.
Safety and Electromagnetic Fields Remain Major Test Items
Putting high-power electrical equipment beneath public pavement inevitably raises safety questions. Honda explicitly says its next testing phase will evaluate measures against electromagnetic-field leakage, along with the structural safety of the transmitting equipment. Modern wireless charging systems also need communications and control systems that ensure power is transferred only when compatible vehicles are positioned appropriately instead of constantly energizing roadway equipment regardless of what passes above.
The industry is already developing rules around those issues. The International Electrotechnical Commission published specifications addressing interoperability and safety for magnetic-field dynamic wireless power transfer, while SAE has been developing wireless-power guidance for heavy-duty vehicles. Testing in Indiana offers another useful reference point. Purdue and INDOT reported end-to-end efficiency approaching 85 per cent in their highway system, while their technical research also assessed electromagnetic exposure. Those figures do not establish Honda’s efficiency or safety performance, but they show the kinds of measurements a commercially credible dynamic-charging system will eventually have to withstand.
Honda Is Far From the Only Group Building an Electric Road
Roads that charge moving EVs are no longer purely conceptual. Michigan opened a quarter-mile wireless charging section of public street in Detroit in November 2023. Inductive coils underneath the roadway can transfer electricity to suitably equipped vehicles while moving or stationary. Testing has included an electric Ford Transit shuttle fitted with wireless receiving hardware. Indiana has taken the idea onto a highway, where Purdue and INDOT demonstrated high-power transfer to an electric semi at highway speed.
Those projects make Honda’s announcement more significant, not less. Multiple independent programs suggest automakers, road authorities and researchers see enough potential in dynamic charging to spend years testing it under real conditions. Japan’s Tateyama experiment adds major automakers Honda and Toyota to a public-expressway program involving construction and infrastructure companies. At the same time, none of these projects proves that thousands of kilometres of charging highways are economically inevitable. SAE research has noted that dynamic electric roads are technically feasible while also emphasizing the enormous infrastructure investment required for deployment at scale.
The Biggest Question Is Whether the Economics Ever Work
The technical idea is compelling: an EV receives energy while doing exactly what it was designed to do—move. The economic equation is more complicated. Electrified roads require power supplies, grid connections, road-embedded transmitters, control equipment, construction work and continuing maintenance. A charging station concentrates similar investment at one location. A dynamic-charging corridor spreads costly equipment along potentially kilometres of public infrastructure.
Research by Natural Resources Canada scientists has suggested that strategically deployed or intermittent charging sections may offer better economics than electrifying an entire roadway. High-traffic freight corridors are particularly attractive because many trucks could repeatedly use the same investment. That fits Honda’s decision to prioritize logistics. The International Energy Agency also notes that electric-road systems are among the possible options for heavy-duty vehicles but says their future role remains uncertain. For Honda, therefore, proving that the system works is only one milestone. Proving that governments, highway operators and fleets can justify paying for it may ultimately be the harder one.
The 2027 Experiment Will Answer Questions a Test Track Cannot
Honda has not announced when consumers will be able to buy a vehicle equipped for its dynamic charging system, nor has it promised a commercial network of electrified highways. That distinction is essential. The company has developed underlying technology and is moving toward increasingly realistic demonstrations. The Tateyama Expressway project will provide an opportunity to study behaviour in a setting with actual highway speeds, pavement conditions and operating demands rather than relying solely on controlled testing.
The 300-metre test section will also be tiny compared with the distance required for a useful nationwide charging network. Yet large infrastructure systems rarely begin at full scale. Honda, Taisei and Taisei Rotec first need to establish that their technology can transfer meaningful power reliably, survive heavy traffic, manage electromagnetic fields and be installed and maintained practically. If those tests succeed, the bigger debate will move from whether an EV can receive electricity while driving to where electrified roads make economic sense. For now, the answer to the first question is increasingly clear: technically, they can.
