{"id":1364,"date":"2018-08-20T16:46:55","date_gmt":"2018-08-20T15:46:55","guid":{"rendered":"https:\/\/trlsoftware.com\/?page_id=1364"},"modified":"2018-08-20T17:22:13","modified_gmt":"2018-08-20T16:22:13","slug":"mova-m8","status":"publish","type":"page","link":"https:\/\/trlsoftware.com\/products\/traffic-control\/mova\/mova-m8\/","title":{"rendered":"MOVA M8"},"content":{"rendered":"
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MOVA\u2019s user-friendliness and versatility has grown over the years with new releases and new practices. Recent work has culminated in the release of MOVA M8 which includes some significant enhancements. A summary follows, and more detail is given after that.[\/vc_column_text][\/vc_column][vc_column width=”5\/12″][vc_single_image source=”featured_image” img_size=”large” alignment=”center” css=”.vc_custom_1520349311460{margin-top: -20px !important;margin-bottom: -20px !important;}”][\/vc_column][\/vc_row][vc_row margin_top=”20″ type=”1″][vc_column width=”7\/12″][vc_column_text]<\/p>\n
One practice that has become widespread with MOVA is the use of controller special conditioning. This is used to achieve behaviour that MOVA would not be able to alone. The practice is used particularly when linking closely-spaced junctions, and particularly so on signalised roundabouts. In MOVA M8, special conditioning can be specified directly in the MOVA data.<\/strong><\/p>\n Up to and including MOVA M7 engineers have had to become familiar with the \u201cMOVA messages\u201d which are a series of numbers, prefaced with mnemonics, to understand what MOVA is doing. The messages do take some getting used to, and even so it can be a challenge to follow them even for the most experienced. To help with this, graphical representation of MOVA activity<\/strong> has been added which makes it easier to understand MOVA operation.<\/p>\n Bus priority facilities have existed in MOVA since version M4. In this latest version, the facilities have been extended so that buses can be included in MOVA\u2019s optimisation routines. <\/strong>This is designed to allow buses a measure of priority, without upsetting normal junction operation too much. Further enhancements include the use of alternative maximums<\/strong> and link based priority codes<\/strong>.<\/p>\n Also available is a Web user interface<\/strong> (UI). Some manufacturers have implemented their own Web UIs, but now it is a standard component of MOVA. The feature allows engineers to use a Web browser to communicate with MOVA. The MOVA Web UI includes the ability to transfer MOVA data sets to and from the MOVA unit.<\/p>\n In addition, a number of \u2018minor\u2019 enhancements have been made. These include the addition of second sink detectors<\/strong>, a user-set link maximum<\/strong> and the ability to increase the value of saturation flow that MOVA uses<\/strong> to mark end-of-saturation<\/strong> once the queue up to the X-detector has cleared. This allows for unusual situations.<\/p>\n All of these new features are available through the use of the latest version of MOVA Tools<\/strong> which has been significantly changed in line with the new MOVA M8 features.[\/vc_column_text][\/vc_column][vc_column width=”5\/12″][vc_row_inner][vc_column_inner el_class=”productsidebar”][vc_column_text el_class=”specs”]<\/p>\n MOVA is a traffic signal control system that uses detectors and signal controllers. Please contact us<\/a> for further information.[\/vc_column_text] There are no training courses currently scheduled, click here to view all training courses.<\/a><\/p>Product Information Sheet<\/a>MOVA Downloads<\/a>[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row type=”2″ padding_top=”32″ padding_bottom=”32″][vc_column width=”7\/12″][vc_column_text]<\/p>\n Figure 1 shows an example of the special conditioning logic form, known as a Rule. This particular one is making use of the smoothed flows as the \u2018source\u2019, one of many MOVA variables available in this tool. In this case the eastbound and westbound flows are compared and if the westbound flows are \u2018greater than\u2019 (operator GT) eastbound the result is true; and false otherwise. Alternatively, the \u2018parameter source\u2019 can be a detector channel, a user named variable (from another Rule) or a numeric value instead of a MOVA variable. There can be many Rules.<\/p>\n Figure 1 also shows the pre-output timers available. The names of each of the timer functions describe their functionality. The principle is that the result of the Rule can be subject to the timers to achieve the required result.<\/p>\n Finally, the output can be any detector channel, one of up to eight output channels or a user defined variable which can be used in other rules.<\/p>\n The advantages to using special conditioning within MOVA are mainly that:[\/vc_column_text][\/vc_column][vc_column width=”5\/12″][vc_empty_space height=”40px”][vc_single_image image=”1367″ img_size=”large” add_caption=”yes” alignment=”center” onclick=”link_image”][vc_column_text]<\/p>\n Figure 1. Special conditioning page<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”2″ padding_bottom=”32″][vc_column] MOVA Tools has a site diagram drawing facility which shows the MOVA data for a site on a schematic diagram. This has been part of MOVA Tools since its release in 2013, though its use isn\u2019t compulsory. Now the diagram is used to form the basis of a mimic diagram that shows information about MOVA operation when connected to a MOVA unit. See Figure 3.<\/p>\n The mimic diagram is effectively the replacement for MOVA Comm (for MOVA M8 only). On the mimic diagram you can see detector activation, \u2018end-sat\u2019 decisions, whether a lane is oversaturated and many other items of information besides. During stop and delay optimisation you can see a representation of the shift-register model that MOVA uses to determine its calculations. These visualisations are designed to help the user understand MOVA operation and make MOVA validation easier and quicker than before.<\/p>\n At the bottom of the Figure, buttons give access to all the other facilities that effectively replace the MOVA menu that you would see through MOVA Comm for previous versions. This includes access to the well-known MOVA messages as well as raw (pre-conditioned) detector states, and the states of the new output channels available via special conditioning.[\/vc_column_text][\/vc_column][vc_column width=”5\/12″][vc_empty_space height=”40px”][vc_single_image image=”1368″ img_size=”large” add_caption=”yes” alignment=”center” onclick=”link_image”][vc_column_text]<\/p>\n Figure 3. MOVA site mimic screen<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”2″ padding_top=”32″ padding_bottom=”32″][vc_column][vc_column_text]<\/p>\n The facilities in MOVA versions M4 to M7 for providing buses priority provide a fair degree of user-set flexibility in the way it reacts. However, when MOVA does react, the optimisation normally carried out is ignored. The facilities are used extensively in linked MOVA systems and the way it reacts is useful for such situations.<\/p>\n However, when providing buses priority, doing so at significant expense to other traffic is not always desirable, especially in busy periods, and any problems caused can mean subsequent buses suffer. Improving the way MOVA works in this area will have a significant impact. The additional facilities are as follows:<\/p>\n Including buses in stop and delay optimisation<\/em><\/strong><\/p>\n To address the issue and yet still give buses a measure of priority, the MOVA stop and delay optimisation has been extended such that buses can be included with user-selectable weighting. For buses approaching on green, the weighting helps extend the green for them, giving them a better chance of continuing without being stopped. For buses stopped at red, the disbenefit for continuing the current green increases, which will tend to give the bus an earlier green. Hence MOVA will tend to favour buses to an extent that the user has some control over, but without ruining the operation of the junction to the detriment of other road users (and subsequent buses). The facility might also be useful for HGVs where it could be desirable to avoid stopping them – all that is required is the addition of selective detection.<\/p>\n Revised stage maximums for buses<\/em><\/strong><\/p>\n The stop and delay optimisation algorithm in MOVA is used only when the junction is deemed to be undersaturated. During oversaturation, MOVA switches to an alternative algorithm that maximises capacity. In such conditions it is more difficult to provide buses with priority without causing too much disruption. Nevertheless, in order to provide some preference to buses, in MOVA M8, revised stage maximum times can be introduced when a bus has been detected. The maximums can be set to come into effect during just oversaturated conditions, just undersaturated conditions or both. Before reaching the alternative bus maximum times, MOVA operates as normal. This means that is possible to set a junction up such that it takes advantage of the ability to include buses in the stop and delay optimisation in undersaturated conditions and then in oversaturated conditions stages can be cut short on the way to the stage servicing the bus. All of the values are, of course, configurable.<\/p>\n Link-based PFACIL codes <\/em><\/strong><\/p>\n Prior to MOVA M8 the bus priority facility used \u2018priority facility\u2019 (PFACIL) codes for each stage to determine whether and how a bus would get priority. A number of settings are available for each stage, but these could only be set once for each stage. This could be limiting, particularly if the facility was actually being used for linking MOVA junctions together. In MOVA M8 the PFACIL codes, which are still codes for a stage, can be set differently for each link. This provides the flexibility to take alternative action depending on which link the priority demand was placed upon.[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”1″ padding_top=”32″ padding_bottom=”32″][vc_column][vc_column_text]<\/p>\n Two issues have arisen in recent years which the Web User Interface (Web UI) attempts to resolve. Firstly, connecting remotely to a MOVA unit using MOVA Comm has issues to do with security. Secondly, maintenance engineers in particular, and anyone who needs to connect to MOVA for a quick check of something, currently needs to use a laptop with all the attendant additional effort that requires.<\/p>\n The security issue can be addressed by the Web UI with added security layers implemented by the manufacturer. Maintenance engineers can connect to the MOVA unit via a tablet or even a mobile phone to inspect MOVA operation on site. In addition, when on site, the engineer can transfer MOVA data to and from the MOVA Unit via the Web UI so that they can often complete their task without using a laptop or even having to open the controller door. Example screen shots are shown in Figure 4.[\/vc_column_text][vc_empty_space height=”40px”][vc_row_inner][vc_column_inner width=”1\/2″][vc_single_image image=”1369″ img_size=”large” add_caption=”yes” alignment=”center” onclick=”link_image”][\/vc_column_inner][vc_column_inner width=”1\/2″][vc_single_image image=”1370″ img_size=”large” add_caption=”yes” alignment=”center” onclick=”link_image”][\/vc_column_inner][\/vc_row_inner][vc_column_text]Figure 4. Example Web UI screens[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”2″ padding_top=”32″ padding_bottom=”32″][vc_column][vc_column_text]<\/p>\n A number of other seemingly minor changes have been made, largely in response to needs from clients and installers, and it is hoped many issues have been dealt with and the increase in flexibility will make a significant difference to the way MOVA can be used. The additions are:[\/vc_column_text][vc_empty_space height=”20px”] MOVA M8 is the latest incarnation of the well-established MOVA signal control strategy. The additional facilities make much better use of the underlying MOVA algorithm providing greater flexibility through more options to use in dealing with different situations. Improved usability has been a focus too and MOVA M8 is more user friendly than before.<\/p>\n The main additions are:[\/vc_column_text][vc_empty_space height=”20px”] [vc_row type=”3″ bg_position=”center” padding_top=”20″][vc_column width=”7\/12″ css=”.vc_custom_1519727569256{padding-top: 20px !important;padding-bottom: 20px !important;}”][vc_column_text] Improving MOVA MOVA\u2019s user-friendliness and versatility has grown over the years with new releases and new practices. Recent work has culminated in the release of MOVA M8 which includes some significant enhancements. A summary follows, and more detail is given after that.[\/vc_column_text][\/vc_column][vc_column width=”5\/12″][vc_single_image source=”featured_image” img_size=”large”…<\/p>\n","protected":false},"author":3,"featured_media":1075,"parent":622,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"acf":[],"yoast_head":"\nCurrent Version: M8.0.1<\/strong><\/h3>\n
System Requirements:<\/h3>\n
Training Course Schedule<\/h3>\n\t\t
Special Conditioning<\/h3>\n
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Site Mimic<\/h3>\n
Additional bus priority facilities<\/h3>\n
Web User Interface<\/h3>\n
Further changes<\/h3>\n
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Conclusion<\/h3>\n
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