Roads Calculators
Pavement design and carriageway width compliance checks per JKR standard specifications.
Flexible Pavement Design (JKR)
ESAL calculation, traffic category, and recommended pavement layer thicknesses per JKR ATJ 5/85.
JKR ATJ 5/85 (Rev 2013)
Road Carriageway Width Check
Verify carriageway width against ATJ 8/86 lane width requirements for rural and urban roads.
ATJ 8/86
Sight Distance Calculator (SSD & OSD)
Calculate stopping and overtaking sight distances with vertical curve K values per JKR/REAM.
JKR ATJ 8/86 / REAM
Road Gradient & Curve Design
Minimum horizontal radius, vertical curve K values, and gradient compliance checks.
JKR ATJ 8/86 / REAM
Traffic Volume (PCU) & LOS
Convert vehicle counts to PCU, calculate V/C ratio, and determine Level of Service.
JKR / HPU / HCM