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Table 6 Criteria of acceptable divergence for geometric characteristics
From: Comprehensive model for upgrading two-lane road network
Geometric characteristic | Threshold values/acceptable divergence |
|---|---|
Stopping/Decision Sight Distance (min values) | Di < Dmin |
Cross slope/superelevation (min/max values) | 2.5% < q < qmax |
Radius of curvature (min values) | Ri < Rmin |
Lane width (min values) |
|
Gradient (max values) | si - smax < 1% |
