Forums Forums Traffic Signals Use of MVDs with Speed Detection?

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    Mark Young

    Hello All,

    I was recently looking at a proposal for a VA site – first one in a while – and the speed survey suggested SDE at 79m to cater for vehicles up to 45mph.

    Whilst all the guidance talks of SDE loops being provided together with System D (XYZ) loops, none of it takes into account (a) the guidance is old, and (b) MVDs are an accepted alternative to XYZ. But as soon as you mention SDE with MVDs, questions are asked and doubts raised as to its suitability.

    Does anyone know or have – either documented or by trial – a definitive answer as to whether or not MVDs are suitable for use on high speed sites? Any info appreciated.

    Thanks, Mark

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