{"id":959,"date":"2020-09-22T16:11:52","date_gmt":"2020-09-22T16:11:52","guid":{"rendered":"http:\/\/ct-technology.ie\/?p=959"},"modified":"2020-09-22T16:11:52","modified_gmt":"2020-09-22T16:11:52","slug":"replacing-traffic-light-detectors","status":"publish","type":"post","link":"https:\/\/ct-technologyinfo.com\/ie\/2020\/09\/22\/replacing-traffic-light-detectors\/","title":{"rendered":"replacing traffic light detector loops in Glasgow WITH THE TMA-122 RADAR"},"content":{"rendered":"\n\n\n\n[et_pb_section fb_built=”1″ admin_label=”section” _builder_version=”4.16″ custom_margin=”0px|||” custom_padding=”0px|||” global_colors_info=”{}”][et_pb_row admin_label=”row” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” custom_margin=”0px|||” custom_padding=”0px|||” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text admin_label=”Text” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” global_colors_info=”{}”]

Glasgow City Council in 2016 took on trial two dual zone detectors as an option for replacing traffic light detector loops. After extensive testing they installed radar VA detectors on traffic signals in the city usually on single approaches or sites that were not ideal for traffic light detector loops.\u00a0 <\/span><\/p>\n

Glasgow has now installed the Icoms TMA-122 detector at the Cathcart Retail Centre on all approaches replacing Vehicle Actuated (V.A.) loops.\u00a0 The site works V.A. off peak* with SCOOT taking control at peak periods.\u00a0 This is a great achievement C&T Technology as we have a client who is confident enough to use the TMA-122 at an important traffic light location.\u00a0 Thanks to Icoms Detections for supplying a great product for replacing loops, and to Glasgow City Council, working with Siemens to install the detection.<\/span><\/p>\n

Renfrewshire has also installed the TMA-122 V.A. detection at Canal Street \/\u00a0 Ferry Road, to make this the 2nd fully VA site replacing traffic light detection loops.\u00a0 Once again a thank you to the engineers at Dynniq in Scotland who have recommended the product to the client.<\/p>\n

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<\/em><\/p>\n

\u00a0For over 30 years, Induction Loops have been the first choice for traffic signal designers.\u00a0<\/span>Mainly because there haven\u2019t been any alternatives and they are good at detecting big lumps of metal, but they are not great at detecting cyclists. So, it has been difficult to innovate with the traffic signal designs, to improve safety and the experience for the cyclist on the carriageway.\u00a0 <\/span>In recent years however, new technologies have emerged that have the potential to replace Loop technology. These new technologies can be utilised to detect cyclist and I will now review these based on my own personal experience.<\/p>\n

 <\/p>\n

Radar<\/strong><\/p>\n

Radar has been around for years on traffic signals and is mainly used on pedestrian crossings.\u00a0 <\/span>The uptake on using radar on junctions in England and Wales is low, although in Scotland it is far more common. Historically, radar had to have a speed threshold to prevent false detection of pedestrians, cats, dogs etc. on the approach to the stop line.<\/p>\n

They were also unable to detect stopped vehicles, so you need to install a Stop Line Detector, or a Loop. Recent detectors like C&T Technologies\u2019 TMA-122 <\/a>can detect very slow-moving vehicles, but filter out pedestrians, and detect stopped vehicles. They also are very good a picking up cyclists. So, if a carbon fibre bike approaches with the latest radar you don\u2019t need to worry about it.\u00a0 <\/span>The biggest enemy of radar is occlusion, where large vehicles block the field of view. \u00a0<\/span>You need to think carefully about where it is going to be installed, and make sure they are not obstructed by street furniture, trees etc.\u00a0<\/span><\/p>\n

*Vehicle Actuated (V.A.) is a mode of operation that the traffic signal controller operates in. For V.A. mode the controller normally uses XYZ loops.\u00a0 These are positioned 12, 25 and 40m back from the stop line. \u00a0Each loop is configured with a 1.5s extension time to give the vehicle time to get from the X to Y to Z and then the stopline.\u00a0\u00a0 With Radar we just set up a 0.25 second extension. In V.A. mode if there is a sufficient gap, the signals then move to another green, or if it is busy it stays on green until the maximum time allowed is met, and then it moves.\u00a0<\/em><\/span>V.A. off peak means that the controller is working in V.A. mode, then during peak periods SCOOT takes over to co-ordinate the junction with any adjacent junctions.<\/em><\/p>\n

 <\/p>[\/et_pb_text][et_pb_text admin_label=”Text” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” global_colors_info=”{}”][\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n\n\n\n","protected":false},"excerpt":{"rendered":"

Glasgow City Council in 2016 took on trial two dual zone detectors as an option for replacing traffic light detector loops. After extensive testing they installed radar VA detectors on traffic signals in the city usually on single approaches or sites that were not ideal for traffic light detector loops.\u00a0 Glasgow has now installed the […]<\/p>\n","protected":false},"author":5,"featured_media":962,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","_mo_disable_npp":"","footnotes":""},"categories":[2],"tags":[],"yoast_head":"\nReplacing Traffic Light Detectors in Glasgow<\/title>\n<meta name=\"description\" content=\"Glasgow City Council tested Icoms Radars. 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