MP-LEB 2026.10.265 Echallens – Turnaround track – LV works and IS cables

The change to the 10 min cadence will require the crossing of three trains at Echallens station (one train waiting at the station, two trains crossing). Currently the infrastructure of Echallens station does not allow the presence of three trains at the station, mainly due to the insufficient length of platform 3. The adaptation of Echallens station would involve very significant investments and repercussions on engineering structures (in particular the RC401 bridge), which is why a turnaround route outside the station was deemed more optimal. In addition, platform 3 will disappear as part of the transformation of Echallens station and the compliance of its access points. The future turnaround route is located to the east of Echallens station after the RC401 cantonal road bridge in the kilometer direction of the LEB. The LEB has carried out preliminary studies with variants of transformation of the station: variants behind Echallens station, variants in Grésaley and variants between Grésaley and Sugnens. The variant chosen consists of implementing a turnaround track without having to adapt the existing Echallens station or the RC bridge, assuming that the convoys can wait on this track and return to platform 1 in Echallens after the convoys cross at Echallens station on schedule. The turnaround track will be located parallel to the main track with a center distance of 3.50 m in alignment. It will be located on the South-East side of the main track and the new track will be connected to it at one end on the Echallens station side. A protective switch with bumper is provided at the southern end of the turnaround track to protect the main track from the risk of drifting. According to the leb specifications, the new track must be designed to allow the reversal of compositions of up to 135 m (i.e. the determining length corresponding to a composition