The driver of the minibus has been giving evidence at the inquests into the A7 deaths.
William Darling, a driver with Telfords, said he saw the lorry drifting towards him across the white line.
"The next thing I knew, I was picking myself off the floor"
The driver was showered with glass and knocked unconscious by the impact, and spent time in hospital being treated for arm and shoulder injuries.
The inquest heard how other passengers on the bus found Miss Rennie on the floor where '"she was already dead".
The driver of the lorry involved in the accident, Ian McQueen, also died.
More top news
Sarah McClay was mauled by a tiger at South Lakes Safari Zoo in 2013. The Zoo will be prosecuted for alleged health and safety breaches.
A look ahead at the forecast for the Border region.
The leader of Cumbria County Council says it will need to make further cuts, and that frontline services will be in the firing line.