GREYHOUND AGREES TO ACQUIRE TRAILWAYS ROUTES <Greyhound Lines> said it agreed to acquire the routes of <Trailways Corp>. Greyhound said it had petitioned the Interstate Commerce Commission for authority to acquire and operate Trailways' routes, 450 of its 1200 buses and some of its terminals and garages. Trailways has abandoned all service in seven states in the past year and more than half of its sevice in three other states, the company said. "Without intervention, the collaspe of Trailways is imminent," said Fred Currey, chairman and president of Greyhound.