Tolong jelaskan mengenai United States dari Lebar sepur ganda

In Los Angeles, the  Los Angeles Railway and  Pacific Electric Railway ran on dual gauge track on some downtown streets.

From 1880 to 1902, the Burlington, Cedar Rapids and Northern Railway (standard gauge) and the Burlington and Northwestern Railway (narrow gauge) shared a dual-gauge mainline from Burlington, Iowa to Mediapolis,  to the north.

The early operational years of the State Belt Railroad in San Francisco featured dual-gauge tracks to accommodate regional railroads of the time, which interchanged via ferry.

Until 1941, the Colorado and Southern Railway used both standard-gauge and narrow-gauge tracks, and had a dual-gauge line between Denver and Golden, Colorado.

Until the 1960s, the Denver and Rio Grande Western Railroad's Alamosa–Durango Line from Alamosa, Colorado to Antonito was dual-gauge.

Previously, in its Mount Union, Pennsylvania yard, the East Broad Top Railroad and Coal Company used dual-gauge tracks.

Apart from the Los Angeles Railway and the Pacific Electric Railway, the examples were  and .