Proving ground

3. Cobblestone profiled circuit

Dimensions:

  • track length is 8.2 km;

  • track carriageway width is 7.5 m.

    • 3.1 Even cobblestone profiled track (internal lane of the circuit)

    The track is intended for vehicles mileage accumulation tests for reliability and fatigue strength.

    Dimensions:

    • track length is 6.7 km;

    • track carriageway width is 3.5 m.

    Surface:

    Cobblestone pavement on a sandy subbase and a cement concrete base (common with the outer lane).

    3.2 Profiled cobblestone track (external lane of the circuit)

    The track is intended for (accelerated) mileage accumulation tests of vehicles.

    Dimensions:

    • track length is 6.7 km;

    • carriageway width is 4 m (two tracks of 1.75 m each, separated by a concrete strip 0.5 m wide).

    Surface:

    Surface of tracks made of cobblestone embedded in concrete on a cement-concrete base (common with the internal lane).

    3.3 Trial sections of circuit cobblestone tracks

    Dimensions:

    • track carriageway width of all sections is 7.5 m;

    Surface:

    Even cobblestone pavement on sandy sub-base and cement concrete base. Sections paved with cobblestone embedded in concrete, with threshold irregularities on a cement concrete base

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