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Incorrect elevation profile – Great St Bernard Tunnel

Bug Reports

Hello,

I noticed an incorrect elevation profile in ABRP for the Great St Bernard Tunnel between Switzerland and Italy.

ABRP appears to use the terrain elevation above the tunnel, showing the route climbing to approximately 2,600 m before descending again.

The actual tunnel elevations are:

  • North portal (Switzerland): 1,918 m

  • South portal (Italy): 1,875 m

  • Tunnel length: 5,798 m

  • Actual elevation difference: −43 m

Could you please check and correct the elevation data used for this tunnel?

Thank you.

Where does this happen?
ABRP version number (found at bottom of settings menu)
Posted by ABRP User #3159298 ·
Status: Awaiting Clarification1 comment

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Comments1

  • Mahde - ABRP

    Team•

    Sep 25

    Hello @ABRP User #3159298,

    This happens because OpenStreetMap (one of our data suppliers for road conditions) has the tunnel spread out in multiple end points and happens due to the tunnel being so long that one straight line is not enough.

    When the vehicle reaches one of these points, ABRP recognizes it as the peak of the elevation where the point is at until you continue driving again where the elevation goes down until you reach another point where the elevation goes up/down again. You cannot see the points either since they are in the “edit” mode of Openstreetmap. We are looking into how this can be improved, but this is an answer to why the elevation seemed to rise so suddently.