Spitoon said
punkalouver, I have never understood why some people continue to believe that installing radar and other surveillance systems will prevent runway incursions and accidents.
Occurrence Summary :
A08O0004: The Air Canada Jazz CL-600-2B19 (registration C-GGJA, flight number 8027) landed on runway 24L at Toronto/LBPIA and exited at D4 taxiway. The aircraft was subsequently cleared to taxi across runway 24R turn right on Charlie and hold short of Bravo taxiway. After crossing 24R the aircraft was observed on the airport surface detection equipment (ASDE) by the tower controller. The aircraft appeared to be in the process of turning right onto C4 taxiway which is a high speed exit off of 24R, while Air Canada 622 (A319-100, registration C-FZUL) had been cleared for take off on runway 24R and had just begun the take off roll. Air Canada 622 was at approximately 40 knots and was instructed to abort the takeoff. Meanwhile Jazz 8027 had already turned around and was proceeding as cleared. Air Canada 662 exited D5 taxiway and returned to the departure end of runway 24R and departed without incident. The latest METAR at the time of the occurrence indicated the visibility was 1/4SM and the RVR for runway 24L was 4000 feet.
Now you understand why.