{"id":70379,"date":"2025-03-21T13:06:29","date_gmt":"2025-03-21T12:06:29","guid":{"rendered":"https:\/\/lda-audiotech.com\/?post_type=portfolio_page&#038;p=70379"},"modified":"2026-02-25T14:00:53","modified_gmt":"2026-02-25T13:00:53","slug":"traffic-tunnels-brazil","status":"publish","type":"portfolio_page","link":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/","title":{"rendered":"Traffic tunnels in Brazil"},"content":{"rendered":"<p>LDA Audio Tech has supplied the public address and voice evacuation systems for three major traffic tunnels in Brazil.<\/p>\n<p>These are the Morro Agudo tunnel (1,041 metres) and the Morro do Formig\u00e3o tunnel (530 metres in main gallery), both in the state of Santa Catarina, and the Morro Alto tunnel (1,841 metres each gallery), located in the state of Rio Grande do Sul.<br \/>\n<!--more--><\/p>\n<p>Each of them has an EN 54 certified system consisting of a NEO-8060 main unit with extensions, a local MPS-8Z microphone and noise probes connected to an Ethernet ZES-22 analogue-to-digital converter for automatic gain control.<\/p>\n<p>In the case of the Morro Alto tunnel, a control centre has been located with a server that houses the SIME Control and SIME EVAC software. In addition, additional remote MPS-8Z microphones were installed, connected by NEXO to the other two tunnels to ensure full system integration.<\/p>\n<p>The tunnels are managed by the CCR Group, responsible for the CCR ViaCosteira and CCR ViaSul concessions, which operate the BR-101 highway. The integrator in charge of the implementation was Convergint.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>LDA Audio Tech has supplied the public address and voice evacuation systems for three major traffic tunnels in Brazil. These are the Morro Agudo tunnel (1,041 metres) and the Morro do Formig\u00e3o tunnel (530 metres in main gallery), both in the state of Santa Catarina,&#8230;<\/p>\n","protected":false},"author":46,"featured_media":70345,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","portfolio_category":[407],"portfolio_tag":[],"class_list":["post-70379","portfolio_page","type-portfolio_page","status-publish","has-post-thumbnail","hentry","portfolio_category-ref-tunnels"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Traffic tunnels in Brazil - LDA Audio Tech References<\/title>\n<meta name=\"description\" content=\"Several traffic tunnels in Brazil have public address, background music and voice alarm EN54 systems made by LDA Audio Tech\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Traffic tunnels in Brazil - LDA Audio Tech References\" \/>\n<meta property=\"og:description\" content=\"Several traffic tunnels in Brazil have public address, background music and voice alarm EN54 systems made by LDA Audio Tech\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/\" \/>\n<meta property=\"og:site_name\" content=\"LDA Audio Tech\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/LDAaudiotech\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-25T13:00:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/lda-audiotech.com\/wp-content\/uploads\/2025\/03\/Brazil-tunnels-LDA-references-01.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"700\" \/>\n\t<meta property=\"og:image:height\" content=\"700\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@LDAAudioTech\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/portfolio_page\\\/traffic-tunnels-brazil\\\/\",\"url\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/portfolio_page\\\/traffic-tunnels-brazil\\\/\",\"name\":\"Traffic tunnels in Brazil - LDA Audio Tech References\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/portfolio_page\\\/traffic-tunnels-brazil\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/portfolio_page\\\/traffic-tunnels-brazil\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/lda-audiotech.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/Brazil-tunnels-LDA-references-01.jpg\",\"datePublished\":\"2025-03-21T12:06:29+00:00\",\"dateModified\":\"2026-02-25T13:00:53+00:00\",\"description\":\"Several traffic tunnels in Brazil have public address, background music and voice alarm EN54 systems made by LDA Audio Tech\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/portfolio_page\\\/traffic-tunnels-brazil\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/portfolio_page\\\/traffic-tunnels-brazil\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/portfolio_page\\\/traffic-tunnels-brazil\\\/#primaryimage\",\"url\":\"https:\\\/\\\/lda-audiotech.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/Brazil-tunnels-LDA-references-01.jpg\",\"contentUrl\":\"https:\\\/\\\/lda-audiotech.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/Brazil-tunnels-LDA-references-01.jpg\",\"width\":700,\"height\":700,\"caption\":\"Traffic tunnels in Brazil - LDA References\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/portfolio_page\\\/traffic-tunnels-brazil\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portada\",\"item\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Portfolio\",\"item\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/portfolio_page\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Traffic tunnels in Brazil\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/\",\"name\":\"LDA Audio Tech\",\"description\":\"Integrated Audio Solutions\",\"publisher\":{\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/#organization\"},\"alternateName\":\"LDA\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/#organization\",\"name\":\"LDA Audio Tech\",\"alternateName\":\"LDA\",\"url\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/lda-audiotech.com\\\/wp-content\\\/uploads\\\/2017\\\/05\\\/logo-lda-color.png\",\"contentUrl\":\"https:\\\/\\\/lda-audiotech.com\\\/wp-content\\\/uploads\\\/2017\\\/05\\\/logo-lda-color.png\",\"width\":169,\"height\":90,\"caption\":\"LDA Audio Tech\"},\"image\":{\"@id\":\"https:\\\/\\\/lda-audiotech.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/LDAaudiotech\\\/\",\"https:\\\/\\\/x.com\\\/LDAAudioTech\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/lda-audio-tech\",\"https:\\\/\\\/www.youtube.com\\\/user\\\/LDAaudiotech\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Traffic tunnels in Brazil - LDA Audio Tech References","description":"Several traffic tunnels in Brazil have public address, background music and voice alarm EN54 systems made by LDA Audio Tech","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/","og_locale":"en_US","og_type":"article","og_title":"Traffic tunnels in Brazil - LDA Audio Tech References","og_description":"Several traffic tunnels in Brazil have public address, background music and voice alarm EN54 systems made by LDA Audio Tech","og_url":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/","og_site_name":"LDA Audio Tech","article_publisher":"https:\/\/www.facebook.com\/LDAaudiotech\/","article_modified_time":"2026-02-25T13:00:53+00:00","og_image":[{"width":700,"height":700,"url":"https:\/\/lda-audiotech.com\/wp-content\/uploads\/2025\/03\/Brazil-tunnels-LDA-references-01.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_site":"@LDAAudioTech","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/","url":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/","name":"Traffic tunnels in Brazil - LDA Audio Tech References","isPartOf":{"@id":"https:\/\/lda-audiotech.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/#primaryimage"},"image":{"@id":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/#primaryimage"},"thumbnailUrl":"https:\/\/lda-audiotech.com\/wp-content\/uploads\/2025\/03\/Brazil-tunnels-LDA-references-01.jpg","datePublished":"2025-03-21T12:06:29+00:00","dateModified":"2026-02-25T13:00:53+00:00","description":"Several traffic tunnels in Brazil have public address, background music and voice alarm EN54 systems made by LDA Audio Tech","breadcrumb":{"@id":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/#primaryimage","url":"https:\/\/lda-audiotech.com\/wp-content\/uploads\/2025\/03\/Brazil-tunnels-LDA-references-01.jpg","contentUrl":"https:\/\/lda-audiotech.com\/wp-content\/uploads\/2025\/03\/Brazil-tunnels-LDA-references-01.jpg","width":700,"height":700,"caption":"Traffic tunnels in Brazil - LDA References"},{"@type":"BreadcrumbList","@id":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/traffic-tunnels-brazil\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Portada","item":"https:\/\/lda-audiotech.com\/en\/"},{"@type":"ListItem","position":2,"name":"Portfolio","item":"https:\/\/lda-audiotech.com\/en\/portfolio_page\/"},{"@type":"ListItem","position":3,"name":"Traffic tunnels in Brazil"}]},{"@type":"WebSite","@id":"https:\/\/lda-audiotech.com\/en\/#website","url":"https:\/\/lda-audiotech.com\/en\/","name":"LDA Audio Tech","description":"Integrated Audio Solutions","publisher":{"@id":"https:\/\/lda-audiotech.com\/en\/#organization"},"alternateName":"LDA","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/lda-audiotech.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/lda-audiotech.com\/en\/#organization","name":"LDA Audio Tech","alternateName":"LDA","url":"https:\/\/lda-audiotech.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/lda-audiotech.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/lda-audiotech.com\/wp-content\/uploads\/2017\/05\/logo-lda-color.png","contentUrl":"https:\/\/lda-audiotech.com\/wp-content\/uploads\/2017\/05\/logo-lda-color.png","width":169,"height":90,"caption":"LDA Audio Tech"},"image":{"@id":"https:\/\/lda-audiotech.com\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/LDAaudiotech\/","https:\/\/x.com\/LDAAudioTech","https:\/\/www.linkedin.com\/company\/lda-audio-tech","https:\/\/www.youtube.com\/user\/LDAaudiotech"]}]}},"_links":{"self":[{"href":"https:\/\/lda-audiotech.com\/en\/wp-json\/wp\/v2\/portfolio_page\/70379","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lda-audiotech.com\/en\/wp-json\/wp\/v2\/portfolio_page"}],"about":[{"href":"https:\/\/lda-audiotech.com\/en\/wp-json\/wp\/v2\/types\/portfolio_page"}],"author":[{"embeddable":true,"href":"https:\/\/lda-audiotech.com\/en\/wp-json\/wp\/v2\/users\/46"}],"replies":[{"embeddable":true,"href":"https:\/\/lda-audiotech.com\/en\/wp-json\/wp\/v2\/comments?post=70379"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lda-audiotech.com\/en\/wp-json\/wp\/v2\/media\/70345"}],"wp:attachment":[{"href":"https:\/\/lda-audiotech.com\/en\/wp-json\/wp\/v2\/media?parent=70379"}],"wp:term":[{"taxonomy":"portfolio_category","embeddable":true,"href":"https:\/\/lda-audiotech.com\/en\/wp-json\/wp\/v2\/portfolio_category?post=70379"},{"taxonomy":"portfolio_tag","embeddable":true,"href":"https:\/\/lda-audiotech.com\/en\/wp-json\/wp\/v2\/portfolio_tag?post=70379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}