Firefighters were called to The Thicket Roundabout this morning as a horse box lorry caught alight.
The vehicle was on its way to a horse jumping show at about 10.20am this morning when the drivers noticed smoke billowing out from the engine.
Police and two pumps from Maidenhead were called to the minor blaze with the horses taken out of the vehicle for safety.
The outside lane of the roundabout was also closed while the vehicle, which had pulled over, was made safe.
An animal rescue unit was also called from Reading.
Maidenhead crew manager Martin Smith said: "The box was not involved at all, it was just the engine."
Firefighters left the scene at about 12pm.
Nobody was injured in the blaze.
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