Four snapshots around Biel/Bienne:
Integra frame, Pieterlen, 16.8.1988
Hanspeter Thöni comments: This picture contains an interesting detail: Even though the train has arrived at Pieterlen (the photo was taken from the train!—one can see the yellow indication of the track circuit, and the starting signal is cleared), the red track occupation indicator of the line track is still lighted. Exactly below the block arrow, there is another lighted white lamp in the panel. This is the indicator requesting 'blocking back', with the blocking-back button immediately below. This all means that at this time, this line was not yet equipped with automatic line blocking, as the line tracks were not yet track-circuited. Thus, the train director had to check the tail lamp of each train before blocking back.
The following detail shows these lamps and buttons on the right (click opens it with full resolution):
Details of Integra frame, Pieterlen, 16.8.1988
Station, Pieterlen, 16.8.1988
Is this a picture of the flowers outside the traffic bureau—or an attempt to document the frame inside?
Integra frame, Biel Mett, 16.8.1988
The signal gantry at Biel/Bienne's shunting yard had five semaphores—there will be more photos of it in a later posting:
Signal gantry, Biel/Bienne Rbf, 16.8.1988
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