Sii qor faqradan - Wadooyinka soo gala ayaa si tartiib tartiib ah loo hagaajiyay, dhawaana waxaa la kordhiyay daboolka qulqulka ee dhinaca koonfureed. Musiibadii ka dhacday tunnelkii Mont Blanc 1999
waxay keentay in dib u eegis weyn lagu sameeyo nabadgelyada tunnel-ka waddooyinka ee dalal badan oo ay ku jirto Switzerland, waxaana la qorsheynayaa in si weyn loo hagaajiyo nabadgelyada Grand St Bernard Tunnel. Xaddiga xawaaraha ee 80 km/h (50 mph) ayaa durba lagu dhaqmaa gudaha tunnel.