Active Traffic Management : innovation on the English M42 Motorway. The aim of the ATM pilot is to bring together a number of technologies to demonstrate how they can be used in parallel to make better use of existing road space, thus providing additional capacity, possibly reducing the need for widening. An important component of the study is monitoring the before and after situation, to inform the potential future implementation of ATM elsewhere on the motorway network. A literature study has not identified any similar monitoring studies on the same scale as implemented for the M42 ATM project, and hence a monitoring framework is developed from scratch. The framework is based around indicators that reflect the objectives of the scheme and the Highways Agency overall, and deals in a statistically sound way with all the uncertainties involved in the monitoring process. (Author/publisher)
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