Question 1

What is DWPT?

Accepted Answer

A system that charges EVs while driving, using magnetic coupling between coils embedded in the road and a receiver under the vehicle — no cable or contact required.

Question 2

How does a road charge a moving EV?

Accepted Answer

A buried coil's current creates a magnetic field; a receiver under the vehicle intercepts it overhead, inducing current that's converted and fed into the battery.

Question 3

Has a truck really been charged wirelessly at highway speed?

Accepted Answer

Yes. In March 2026, Purdue reported a Class 8 truck receiving 190 kW from embedded coils on Indiana's U.S. 52/231 at 65 mph — a controlled test, not routine public charging and 200kW of continuous charging also recorded on France's A10 Highway.

Question 4

Does embedded wireless charging affect asphalt?

Accepted Answer

Lab research shows embedded hardware creates a stiffness mismatch with asphalt, and operational heat can soften the binder, accelerating rutting in controlled testing. No public DWPT highway has generated comparable field data yet.

Question 5

Can dynamic charging reduce EV battery size?

Accepted Answer

Potentially, for trucks on fixed, densely electrified routes — but this depends on route coverage, power reliability and infrastructure economics no current project has run long enough to validate.

battery downsizing

Is This the Future of Charging? Inside the Global Wireless Roads Powering EVs as They Drive

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