Block for double-track (p 60 --) and single-track lines (p 70--)
Electric interlocking
Service des gares et des trains
Instructions générales pour le Service télégraphique
Types of electric equipment and its maintenance
Block system Tyer, Interlocked block PLM 1-2-3, single-track (bells, PLM 1)
Signal and point indicators and interlockings, level crossings
Supplies of parts and spares för telecommunications Logistics and administration
Sidan uppdaterad den 29 december 2023