The Campaign for Better Transport is urging the DfT to use GPS to get accurate data on what types of roads longer semi-trailers are using and for how long, without which it is difficult to evaluate the safety of these seven foot longer lorries on local roads (Letters LTT 03 Mar). Modelling origins and destinations is not the same as getting actual data from GPS.
Furthermore, the DfT justifies the socio-economic outcomes of longer semi-trailers by relying on information about load...
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