As a result, these two stations operated alternately on two different frequencies for many years.

The Carlton section opened throughout on 14 June the cars continuing to operate alternately to the Market Place or to Colwick Road.

Heating and cooling output may operate concurrently or alternately depending on need and system construction.

For almost a month, she operated alternately as PIRAZ ship and as strike-support and search-and-rescue ship.

During the next 3 years, she operated alternately in the Norfolk area and in the Caribbean.

In the timetable change of December 2007, an hourly service was implemented between Dresden and Nuremberg; these services operate alternately by Marktredwitz and via Bayreuth.

It was later organised into two flights which operated alternately from Laverton and Mallacoota.

Until November 1941, she operated alternately off the west coast and in Hawaiian waters.

At peak times, an additional train operated alternately in the branch's western tunnel into the bay platform at Holborn.

These typically consist of a pair of shafts, operated alternately.