A serious accident is causing significant delays between Cononley and Bradley on the A629 between Cross Hills and Skipton.
Reports suggest an oil tanker is involved and is on fire.
The road was reportedly fully closed, although a recent police tweet suggests it is now partially open with traffic control.
The Keighley Bus Co tweeted earlier: "66 is running Keighley to Cross Hills and back only. Road closed between Cononley and Bradley due to oil tanker fire."
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