Mathematical relationships for metal build-up on urban road surfaces

What is it about?

Sources of metal build-up on road surfaces: Mn-geogenic and Pb, Cu, Zn, Cr, Ni and Cd-traffic related. The traffic sources are: vehicle wear-Pb, Cu, Zn; exhaust-Cr, Ni; exhaust and wear-Cd. However, land use does not exhibit clear pattern in influencing metal build-up process. Reliable prediction equation was developed for cumulative fuel related metal load. However, prediction equation for wear-related metal load is suitable only for preliminary studies.

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Why is it important?

The research study identifies the sources of metals commly found on urban road surfaces. Prediction equations were developed for fuel and vehicle wear-related metal loads.