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Table 1 Minimum horizontal radii (m) for emax = 0.08 [2]

From: Sight distance restriction on highways’ horizontal curves: insights and sensitivity analysis

Parameter Design Speed (km/h)
60 70 80 90 100 110 120
emax
(max superelevation)
0.08 0.08 0.08 0.08 0.08 0.08 0.08
fRmax
max side friction
0.17 0.15 0.14 0.13 0.12 0.11 0.09
Rmin
min horizontal radius (m)
113 168 229 304 394 501 667