Construction Work – Davos Laret Pilot Road Renewal 2026. On The Cavadürli - Davos Laret Section Between Km 39.281 - 40.631, A Pilot Road Renewal Is Planned. A Total Renovation Of This Section Of The Route Is Planned. The Track Section Exhibits Greater Track Position Instability, Especially In Summer. The Gravel Is Heavily Contaminated With Fine Particles. Due To The Expansion Of Services, This Route Is Heavily Used, So The Load On The Track Does Not Decrease. In Order Not To Worsen The Current Condition, The Section Should Be Rebuilt As Soon As Possible. The Synergies And Route Closures Of The Station Project Should Be Used To Avoid Opening A Construction Site Again At A Later Date (Approx. In 5-10 Years). At The Same Time, This Section Of Track Represents An Optimal Test Field For Verifying The Results Of The Railplus Vehicle/Track Interaction Research Project. The Plan Is To Build A Complete New Track With A Renewal Of The Subsoil, Including The Installation Of A Pss In Sections And An Ac Rail Surface, Including The Associated Drainage System. At The Same Time, All Cable Systems Will Be Renewed And Expanded. The Superstructure Will Then Be Completely Renewed. The System And Research Findings From The Above-Mentioned Research Project Are Implemented In The Superstructure Renovation. Sleeper Soles, New Rail Steel, New Intermediate Layers, Etc. Are Installed. Initial Grinding And Preconditioning Of The Rail Are Also Carried Out Before The First Rail Vehicles Drive On The Track. It Is Planned To Use Ac Rail In One Part And Pss In The Other Part As Part Of A Pilot Test For Subsurface Renewal. These Layers Have The Function Of A Classic Base Layer, Separating And Filtering Tasks And Protecting The Subsoil From Possible Frost And Mud Build-Up.
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