The faster airplanes fly, the more traffic congestion they can cause on the airways. Last week Canada's Department of Transport, looking forward to the time when jetliners will be sweeping across the continent at better than 500 m.p.h., contracted with Raytheon Manufacturing Co. for $5,000,000 worth of long-range radars for 15 major Canadian airports from Moncton, N.B. to Vancouver. When the system is in operation in 1958, it will keep the headlong jets from 1) treading on each other's heels, 2) overrunning the slower, propeller-driven craft (see map).
Raytheon's airway radars, which have...