21.   He said a four-lane nationwide highway system, begun under the previous government, would be widened to six lanes in some areas.

22.   Hughes, for example, is broadening its base in communications satellites, while TRW is pressing ahead in advanced vehicle and highway systems.

23.   If only we could make it work on our far superior interstate highway system.

24.   If substituting computers to create an automated highway system smacks of Big Brother, well, take your choice.

25.   In other parts of the country, where there are newer highway systems, high-speed lanes dedicated exclusively to users of the electronic tag system have no such obstructions.

26.   In the interest of a rational highway system, for example, the feds set uniform speed limits for the interstates that the states must enforce.

27.   It did that, but the highway system also allowed city dwellers to move to the suburbs easily.

28.   It is the automobiles on our highway system.

29.   Its inclusion was considered unusual because the bill, which deals mostly with the federal highway system, would not normally encompass the renovation of a train station.

30.   Just as the interstate highway system looks like a web, with many interconnections, backbones are not so simple.