11.   One track will be used exclusively for eastbound traffic, and one for westbound freight.

12.   Southern Pacific uses the track only for occasional freights between Phoenix and Yuma, said Mike Furtney, a Southern Pacific spokesman in San Francisco.

13.   Steve Thornburg, a computer consultant in East Brookfield, Mass., used two tracks to create music on his computer.

14.   Svacina said the Texas track is being used more and more for concerts and other large-crowd gatherings.

15.   The higher premiums would be passed on to Amtrak in the form of higher access fees to use the tracks.

16.   The outer tracks were used by Manhattan-bound streetcars running to the underground terminal at Second Avenue.

17.   The plan would have included using existing tracks as far east as Chandler and as far west as Goodyear.

18.   The rail board ordered Union Pacific in October to let Texas-Mexican Railroad use its tracks around Houston to serve customers hurt by the delays.

19.   The three-dimensional train ride adventure lets them build train tracks or use existing tracks.

20.   The tracks are now used by Delaware Valley Railroad Co. of Kennett Square, Pa.