We have a lot of experience in its use, and many successful schemes.
For example, at the Newport east ‘Coldra’ junction, M4 Junction 24 / A449 / A48 / A455, previous extensive queuing was resolved by the first ‘double’ Mova roundabout. One Controller operates two Mova units controlling a six leg junction, four legs of which are signal controlled, the other two of which are give way approaches, indirectly controlled by the signals when necessary to minimise queue lengths - as reported in TE+C, July / August 2000 issue. This junction is shortly be further improved by the addition of a cut-through, removing the heaviest movement from the roundabout circulatory to pass through the centre of the junction. We have converted many significant junctions to Mova control, including M42 J6 (NEC), and the conversion of M11 J8 (Stanstead) from Scoot to Mova operation.
With the introduction of Mova 6, a simple version of this technique is now available to all users, as a programmable facility within the dataset itself, offering the ability to set pedestrian priority to limit vehicle green times to allow control to move forward in the stage sequence to serve pedestrian phases / stages earlier than would otherwise be the case.
Mova Crossings: Free standing or Mid-block Mova operated Pedestrian Crossings: Mova has proved to be highly effective at Pedestrian Crossings, where unlike VA which holds vehicle green if there vehicles anywhere within the vehicle detection zone, Mova closes vehicle green at the end of saturation flow in the first gap in approaching traffic, and hence serves pedestrians far quicker than VA, whilst minimising traffic delays. Pedestrians are able to cross sooner, and receive their green at a time when there are natural gaps in arriving traffic, and hence are safer than VA crossings.
Linked Mova schemes, co-ordinated systems of Mova controlled Signal controlled junctions, are now common place, and the techniques are well understood and applied to many roundabouts, (more than 80 motorway junctions now), gyratories, and small networks of linked junctions.