Also, trains 448 and 449 operate on mainly single-track railroad.

Sudan has 4,578 kilometers of narrow-gauge, single-track railroads that serve the northern and central portions of the country.

At first, the East Siberian Railway was a single-track railroad.

Chipyong-ni was a small crossroads town half a mile long and several blocks wide, situated on a single-track railroad.

The NHRR is primarily a single-track railroad with passing sidings at Lahaska, Buckingham Valley, Wycombe and Ivyland.

Double-tracking frequently requires construction of parallel single-track railroads or bypass tunnels on new alignments.

This practice greatly increased the efficiency of single-track railroads by enabling two trains traveling in opposite directions to use the track at the same time.

Its chief disadvantage, however, was that this created what was in effect a single-track railroad through the tunnel-a bottleneck-which with numerous trains in both directions inevitably would lead to delays.

When trains are running in opposite directions on a single-track railroad, meeting points ("meets") are scheduled, at which each train must wait for the other at a passing place.

It is located midway between Frankfort and Lexington along the single-track railroad between them.