Enter your project parameters below to calculate both MSA (cumulative design traffic) and CV (commercial vehicles per lane per day) simultaneously. Results update automatically as you type.
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Key / Abbreviations
vpd — vehicles per day
CV/l/d — commercial vehicles per lane per day
msa — million standard axles
OGV1 — other goods vehicle class 1 (incl. PSV)
OGV2 — other goods vehicle class 2
Disclaimer
This calculator is provided as a supplementary guidance tool only and can act as a sense check function for hand calculations. Engineers should refer to CD224 for developing design traffic calculations. Results should be validated by a qualified roads engineer before use in any road design.
