Sight Distance Calculator (SSD & OSD)
Ref: JKR ATJ 8/86, REAM Road Geometric Design Guide
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SSD = 0.278·V·t + V²/(254·(f±g))
Ref: JKR ATJ 8/86, REAM Road Geometric Design Guide
30–120 km/h per road class
Standard: 2.5 s
Wet surface: 0.29–0.44 (speed dependent)
Positive = uphill, negative = downhill
Standard 150 mm
Standard 1050 mm
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.