He was actually only driving 90km/h, because that's the allowed speed for busses on such roads.
And he didn't hit the entrance wall, but he ran into a wall somewhere inside the tunnel near an emergency escape (a spot where people with car troubles can park etc).
What I heard on the news was that the driver must have bumped into the sidewalk or something, which caused him to turn right, just the littlest bit, and before he could correct it.. He hit the wall from the emergency escape.
And for the amount of deaths, as far as I recall 28 deaths. 22 Children and 6 Adult
