Addressing the initial Expo plan, Quimby told the commission that a street-level crossing at Farmdale would present "an unreasonably high safety risk" to Dorsey students, even at speeds as low as 10 mph.
A catastrophic accident could occur, he said, if a train derailed and went into a crowded pedestrian holding area or a train pushed a vehicle into the same place. A serious explosion, he said, could occur if a train collided with a truck or bus.
Quimby further testified that MTA's grade separation criteria appeared to be more concerned with operational convenience than safety.
Critics also say that students, adults and motorists can get around crossing gates and there are no assurances that train speeds through the intersection won't increase later. They note that serious accidents have occurred on the county's Gold Line and Blue Line light-rail systems at speeds of 15 mph or less.
"The entire community is put at risk by this train. It's jeopardizing everyone," testified Jevante Davis, a Dorsey student and captain of the varsity wrestling team. This issue "isn't going to be over until it [the train] is under."