A dirt road of simply two parallel tracks, such as many he had seen in his own country.

In 1985 all new students were invited to volunteer to study on the parallel track.

The new system ran as a parallel track for only two years, and all of the students were volunteers.

The companies' proposals had been on parallel tracks, each with its own set of supporters.

For the next dozen hours, my mind operated along parallel tracks.

These participants would join a trial even if a parallel track were available, he said.

Bell's thoughts had clearly been following along a parallel track.

But researchers say the idea of the parallel track was never logical.

Those are parallel tracks, and that should have caused us concern.

For now, the Clinton campaign is operating on a set of at least three parallel tracks.