PC Mark Dempster of the collision investigation unit told the hearing there was no evidence of ice on the road:
"To move a wagon of this size across the road would require a large piece of ice- in the nine minutes it took the emergency services to arrive that ice would still be visible"
"On the balance of probability as to why Mr McQueen failed to negotiate the left hand kink it is possible he became distracted."
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Pictures from the commemoration marking the centenary of the Quintinshill rail disaster, which killed more than 200 people, is underway.
The 100th anniversary of Britain's worst rail disaster will be commemorated at a special service today.