TRL MOVA 3.1.2.439

Originally designed by TRL during the 1980s, MOVA is now a very well established strategy for the control of traffic light signals at isolated junctions. It can also be used at stand-alone pedestrian crossing, i.e. Puffin and Pelicans. Over 4000 sites have been equipped with MOVA with each year seeing around another 250 installations. MOVA is now often deployed as a linked scheme.

MOVA is designed to cater for the full range of traffic conditions, from very low flows through to a junction that is overloaded. For the major part of the range - before congestion occurs, MOVA operates in a delay minimising mode; if any approach becomes overloaded, the system switches to a capacity maximising procedure. MOVA is also able to operate at a wide range of junctions, from the very simple ‘shuttle-working’, to large, multi-phase multi-lane sites.

MOVA is particularly well suited to the following:
Sites with high traffic flow, particularly where these are seasonal or intermittent (for instance, motorway diversion routes and holiday routes).
Sites experiencing capacity difficulties under VA control with congestion on one or more approaches.
Sites with high speed approaches and/or red compliance problems.
Where additional capacity is required to allow pedestrian facilities or safer staging structure to be introduced.
Where more than one junction is situated too close to be considered as isolated, there are ways in which two or more junctions can be linked by the use of MOVA control. Partially or even fully signalised roundabouts are a good example of a MOVA linking opportunity.
Puffin crossings where the call-cancel demands from kerbside detectors can be dealt with correctly and the identification of gaps in traffic can be considerably more effective than D-system VA.

Operating System: Windows 7, 8/8.1, 10

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