Lix Toll strange event 2011

Reported in 2015 directly from witness: A delivery driver reported a strange occurrence that happened around June 2011, this is suggestive but still worth recording: "I can't remember the exact date but was about 4 years ago. Stopped near Lix Toll near Killin for tachograph break. Woke up from sleep to find truck shaking and thinking I was dreaming. Parked in front of forestry gate. Got out of truck to investigate but nothing there. This was I remember about June."