Granted doesn't mean train-free

Anyone planning a track renewal knows this. The windows are in the graphical timetable, read with a ruler on a PDF, night by night, and as-required freight splits the gap you counted on. A granted possession is a slot in the plan, not proof the track is empty.

One case on our Try page: a graphical timetable and the possessions granted for a renewal. Yesper read every train off the PDF and found eight nights long enough, mostly Sunday mornings. One of the five possessions had as-required freight inside it.

The clash shows up in the plan instead of at the track at night. You go back to traffic control for another window while there's time. Same for the neighbouring jobs on the Try page: crew and flagging hours from the possessions, a tie replacement estimate by window length, a work plan for a culvert.

Try it yourself →

Benjamin Glaser Co-founder at Yesper. Writes about AI and the industry that builds the world. benjamin@yesper.ai

Yesper is the AI civil engineer for construction and infrastructure. AFRY, COWI, NRC Group and other Nordic firms use it to halve the time on a study, rerun calculations in minutes, and catch errors that would otherwise slip through. Get in touch if you'd like to see what it can do for you.

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