Road Gradient & Curve Design
Ref: JKR ATJ 8/86, REAM Road Geometric Design Guide
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R_min = V² / (127 × (e + f))
Ref: JKR ATJ 8/86, REAM Road Geometric Design Guide
30–120 km/h
Max 6–10% per JKR
0.12–0.17 (speed dependent)
Gradient before curve
Gradient after curve
From SSD calculator
Disclaimer: This output is an engineering calculation aid only and does not constitute a final or endorsed design. All designs submitted to Malaysian authorities must be endorsed by a registered Professional Engineer (PE) under the Board of Engineers Malaysia (BEM) in accordance with the Registration of Engineers Act 1967.