UTMC OTU/MOVA Handbook
667/HB/31601/000
Page 75
Issue 5
7. MOVA
7.1 MOVA INTRODUCTION
:
BEFORE LOADING ANY CONFIGURATION DATA, REFER TO SECTION
ON PAGE 84
.
This section covers the installation and commissioning steps for MOVA. The outstation
is capable of running up to four MOVA streams simultaneously, for additional
information on this option see section 7.6.
What is MOVA? The following is an extract from the introduction of AG44.
MOVA (Microprocessor Optimised Vehicle Actuation) is the signal control strategy
researched and developed by TRL Limited for use at isolated (uncoordinated) road
traffic intersections. MOVA caters for all traffic conditions from very low flows through
to a junction that is overloaded. For nonoverloaded junctions, MOVA minimises delay; if
any approach becomes overloaded, a capacity maximising procedure is used. MOVA is
also able to operate at a wide range of junctions.
Also refer to the Highways Agency Installation Guide for MOVA (MCH 1542) and the
TRL manuals AG44 and AG45. These documents complement this handbook by
covering the design of MOVA intersections, such as determining the location of the
vehicle loops and the construction of the MOVA site data, as well as commissioning the
completed MOVA intersection.
See section 4 for the installation and section 5 for maintenance details.
The MOVA facility requires the use of a licence code in order to be activated. See
section 7.3.5, on page 81.
MOVA Maximum Capabilities per Stream
Feature
Maximum
Detector Inputs
64
Confirm Inputs
32
Controller Ready Inputs
1
Force Bit Outputs
10
Take Over Output
1
The above maximums may be further restricted where facilities are shared, e.g. where
detector inputs are also used by SCOOT, or where only one I/O card is fitted.
Additionally MOVA 6 can handle at most 64 distinct detector inputs across all streams,
eg. 16 on each or 64 on a single stream installation. This total has been increased to
128 in MOVA 7 (see section 7.7.4 and Appendix G)
