The Atlas shows all currently operated common carrier, tourist and major industrial railroads along with abandoned routes. Lines shown as electrified or narrow gauge are shown only as such when they are currently so equipped or were at abandonment. Lines built as narrow or broad gauge and subsequently regauged are shown as standard gauge. It should be noted that some lines shown as "in service" may see very infrequent use whilst some "abandoned" lines may, if the tracks remain in place, be reactivated for a special movement.

 Every effort has been made to show all current operating locations as defined in railroad operating timetables. 

The Atlas shows all currently operated common carrier, tourist and major industrial railroads along with abandoned routes. Lines shown as electrified or narrow gauge are shown only as such when they are currently so equipped or were at abandonment. Lines built as narrow or broad gauge and subsequently regauged are shown as standard gauge. It should be noted that some lines shown as "in service" may see very infrequent use whilst some "abandoned" lines may, if the tracks remain in place, be reactivated for a special movement.