{"id":36885,"date":"2024-01-26T11:18:21","date_gmt":"2024-01-26T10:18:21","guid":{"rendered":"https:\/\/sceaux-lagazette.fr\/?p=36885"},"modified":"2024-04-03T09:21:32","modified_gmt":"2024-04-03T07:21:32","slug":"prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes","status":"publish","type":"post","link":"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/","title":{"rendered":"Prolongement de la ligne 4 vers Ch\u00e2tenay-Malabry\u00a0: de nouvelles \u00e9tudes"},"content":{"rendered":"\n<p>Le groupe de la majorit\u00e9 municipale le confirme dans Ch\u00e2tenay-Mag de janvier&nbsp;: le \u00ab&nbsp;Contrat de Plan \u00c9tat \u2013 R\u00e9gion acte du financement d\u2019une \u00e9tude sur le prolongement de la ligne 4 du m\u00e9tro jusqu\u2019\u00e0 Ch\u00e2tenay-Malabry.&nbsp;\u00bb<\/p>\n\n\n\n<p>En effet, mercredi 20 d\u00e9cembre, M. Cl\u00e9ment Beaune, alors ministre d\u00e9l\u00e9gu\u00e9 charg\u00e9 des Transports (avant le remaniement de d\u00e9but janvier), Mme Val\u00e9rie P\u00e9cresse, pr\u00e9sidente de la R\u00e9gion \u00cele-de-France et M. Marc Guillaume, pr\u00e9fet de la r\u00e9gion d\u2019Ile-de-France, Pr\u00e9fet de Paris, ont sign\u00e9 un protocole relatif au volet mobilit\u00e9s 2023-2027 du contrat de plan Etat-R\u00e9gion. Ce seront quelque 8,4 Md\u20ac qui&nbsp;seront investis.<\/p>\n\n\n\n<p>Aux 3 milliards d&rsquo;euros venant de l&rsquo;\u00c9tat via la Soci\u00e9t\u00e9 du Grand Paris (36%) s&rsquo;ajouteront 3,7 milliards de la r\u00e9gion (44%) et 1,7 milliard (20%) attendu de la part de divers autres financeurs, comme la RATP, SNCF, IDFM et les collectivit\u00e9s locales. Un total de 8,4 milliards d&rsquo;euros, donc, pour am\u00e9liorer la mobilit\u00e9 dans le Grand Paris et au-del\u00e0 \u00e0 l&rsquo;horizon fin 2027.<\/p>\n\n\n\n<p>Ce contrat de plan \u00c9tat-r\u00e9gion (CPER) planifie tous les grands projets de transports pour les quatre prochaines ann\u00e9es, mais servira surtout \u00e0 mener \u00e0 bien les gros dossiers en cours. \u00c0 c\u00f4t\u00e9 de ces gros dossiers, une dizaine d&rsquo;extensions du m\u00e9tro sont \u00e0 l&rsquo;\u00e9tude parmi lesquelles celle de la ligne 4 jusqu&rsquo;\u00e0 Ch\u00e2tenay-Malabry.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Un budget raisonnable<\/h2>\n\n\n\n<p>Selon les \u00c9chos du 29 d\u00e9cembre 2023, \u00ab&nbsp;<em>cela montre qu&rsquo;Ile-de-France Mobilit\u00e9s, l&rsquo;autorit\u00e9 organisatrice des transports franciliens, ainsi que la R\u00e9gion, la RATP et l&rsquo;\u00c9tat prennent au s\u00e9rieux l&rsquo;hypoth\u00e8se de ce prolongement de Bagneux \u00e0 Ch\u00e2tenay-Malabry.<\/em>&nbsp;\u00bb<\/p>\n\n\n\n<p>Alain Piffaretti, l\u2019auteur de l\u2019article, rappelle qu\u2019il s\u2019agirait de prolonger la \u00ab&nbsp;<em>ligne de m\u00e9tro de la station Bagneux-Lucie Aubrac en direction de Bourg-la-Reine. Apr\u00e8s 1,5 kilom\u00e8tre en souterrain, le m\u00e9tro finirait par rejoindre la branche Robinson du RER B. Les \u00e9lus s&rsquo;estiment confiants sur la r\u00e9alisation du trac\u00e9 au vu des nombreux avantages de l&rsquo;op\u00e9ration.<\/em>&nbsp;\u00bb<\/p>\n\n\n\n<p>On sait combien le projet de prolongement a suscit\u00e9 l\u2019adh\u00e9sion des maires des communes concern\u00e9es, de Montrouge \u00e0 Verri\u00e8res-le-Buisson, en passant par Antony, Bagneux, Bourg-la-Reine, Ch\u00e2tenay-Malabry, Fontenay-aux-Roses, Le Plessis-Robinson et Sceaux. Ils ont d\u2019ailleurs cr\u00e9\u00e9 l&rsquo;<em>Association des villes et des \u00e9lus pour le prolongement sud de la ligne 4<\/em>.<\/p>\n\n\n\n<p>Une d\u00e9lib\u00e9ration du conseil municipal de Fontenay du 12 d\u00e9cembre 2022 illustrait bien les raisons de l\u2019adh\u00e9sion \u00e0 l\u2019association. \u00ab&nbsp;<em>Le d\u00e9veloppement urbain et d\u00e9mographique du secteur Sceaux\/Robinson\/Ch\u00e2tenay-Malabry justifie d\u2019avoir une liaison directe par rail avec Paris. Le prolongement offrirait une alternative \u00e0 la branche Robinson qui p\u00e9nalise le trafic sur la ligne principale.&nbsp;<\/em>\u00bb L\u2019\u00e9tude r\u00e9alis\u00e9e en 2020 pour VSGP par le bureau d\u2019\u00e9tudes SETEC montrait la faisabilit\u00e9 du prolongement de la ligne 4 jusqu&rsquo;\u00e0 Bourg-la-Reine, pour un co\u00fbt \u00e9valu\u00e9 alors \u00e0 225 millions (pour des pr\u00e9cisions, voir <a><\/a><a href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/02\/24\/ligne-4-jusqua-chatenay-malabry\/\">l\u2019article de G\u00e9rard Bardier dans la Gazette<\/a>). Si l\u2019on en croit <em>Les Echos,<\/em> le co\u00fbt approcherait plut\u00f4t les 300 millions d&rsquo;euros. L\u2019\u00e9tude qui vient d\u2019\u00eatre financ\u00e9e en dira plus<em>.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u2019automatisation de la ligne 4<\/h2>\n\n\n\n<p>Remarquons que la ligne 4 vient d\u2019\u00eatre automatis\u00e9e, ce qui rend le prolongement plus r\u00e9aliste. En passant d\u2019un train tous les quarts d\u2019heure \u00e0 un train toutes les deux minutes, sur le tron\u00e7on Robinson, on accro\u00eet significativement la capacit\u00e9 de transport.<\/p>\n\n\n\n<p>Les curieux consulteront avec int\u00e9r\u00eat <a href=\"https:\/\/www.iledefrance-mobilites.fr\/actualites\/automatiser-ligne-de-metro-ile-de-france-8-questions\">le site d\u2019IdF Mobilit\u00e9s<\/a> qui donne un r\u00e9sum\u00e9 des travaux n\u00e9cessaires.<\/p>\n\n\n\n<p>\u00ab&nbsp;Automatiser compl\u00e8tement une ligne qui reste en exploitation, comme la ligne 4 par exemple, cela prend environ 10 ans, avec une majorit\u00e9 de travaux effectu\u00e9s la nuit. Car si les \u00e9l\u00e9ments industriels et les trains peuvent \u00eatre disponibles en une poign\u00e9e d\u2019ann\u00e9es, il faut aussi adapter les stations, l\u2019ensemble des postes de signalisation voire les terminus des lignes :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00e9ploiement des portes pali\u00e8res pour s\u2019assurer que personne ne descende sur les voies en cas de trains sans conducteurs<\/li>\n\n\n\n<li>Reprise des quais afin qu&rsquo;ils soient en mesure de supporter le poids des portes pali\u00e8res<\/li>\n\n\n\n<li>Cr\u00e9ation de nouvelles sorties de secours, car les nouveaux trains automatiques permettent d\u2019accueillir plus de voyageurs, ce qui implique plus de gens \u00e0 \u00e9vacuer en cas de probl\u00e8me(s)<\/li>\n\n\n\n<li>Agrandissement des locaux techniques, pas toujours \u00e9vident dans le cadre tr\u00e8s contraint d\u2019une station de m\u00e9tro parisienne<\/li>\n\n\n\n<li>Modification des syst\u00e8mes de signalisation<\/li>\n\n\n\n<li>Adaptation de l\u2019alimentation \u00e9lectrique<\/li>\n<\/ul>\n\n\n\n<p>On le voit, pour automatiser une ligne, une approche globale est indispensable.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Sur le m\u00eame sujet<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Une association pour le prolongement sud de la ligne 4&nbsp;&nbsp;&nbsp; <a href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/02\/08\/une-association-pour-le-prolongement-sud-de-la-ligne-4\/\">https:\/\/sceaux-lagazette.fr\/index.php\/2023\/02\/08\/une-association-pour-le-prolongement-sud-de-la-ligne-4\/<\/a><\/li>\n\n\n\n<li>Ligne 4 jusqu\u2019\u00e0 Ch\u00e2tenay-Malabry ?&nbsp; <a href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/02\/24\/ligne-4-jusqua-chatenay-malabry\/\">https:\/\/sceaux-lagazette.fr\/index.php\/2023\/02\/24\/ligne-4-jusqua-chatenay-malabry\/<\/a><\/li>\n\n\n\n<li>\u00c9lus, citoyens et prolongement de la ligne 4&nbsp;&nbsp;&nbsp; <a href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/03\/13\/elus-citoyens-et-prolongement-de-la-ligne-4\/\">https:\/\/sceaux-lagazette.fr\/index.php\/2023\/03\/13\/elus-citoyens-et-prolongement-de-la-ligne-4\/<\/a> Plaidoyers pour le prolongement de la ligne 4 <a href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/06\/14\/plaidoyers-pour-le-prolongement-de-la-ligne-4\/\">https:\/\/sceaux-lagazette.fr\/index.php\/2023\/06\/14\/plaidoyers-pour-le-prolongement-de-la-ligne-4\/<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Le groupe de la majorit\u00e9 municipale le confirme dans Ch\u00e2tenay-Mag de janvier&nbsp;: le \u00ab&nbsp;Contrat de Plan \u00c9tat \u2013 R\u00e9gion acte du financement d\u2019une \u00e9tude sur le prolongement de la ligne 4 du m\u00e9tro jusqu\u2019\u00e0 Ch\u00e2tenay-Malabry.&nbsp;\u00bb En effet, mercredi 20 d\u00e9cembre, M. Cl\u00e9ment Beaune, alors ministre d\u00e9l\u00e9gu\u00e9 charg\u00e9 des Transports (avant&#8230;<\/p>\n","protected":false},"author":6,"featured_media":36887,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[263,249,270],"tags":[],"class_list":["post-36885","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chatenay-malabry","category-les-plus-lus","category-projets-politiques","entry","simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Prolongement de la ligne 4 vers Ch\u00e2tenay-Malabry\u00a0: de nouvelles \u00e9tudes - La Gazette<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prolongement de la ligne 4 vers Ch\u00e2tenay-Malabry\u00a0: de nouvelles \u00e9tudes - La Gazette\" \/>\n<meta property=\"og:description\" content=\"Le groupe de la majorit\u00e9 municipale le confirme dans Ch\u00e2tenay-Mag de janvier&nbsp;: le \u00ab&nbsp;Contrat de Plan \u00c9tat \u2013 R\u00e9gion acte du financement d\u2019une \u00e9tude sur le prolongement de la ligne 4 du m\u00e9tro jusqu\u2019\u00e0 Ch\u00e2tenay-Malabry.&nbsp;\u00bb En effet, mercredi 20 d\u00e9cembre, M. Cl\u00e9ment Beaune, alors ministre d\u00e9l\u00e9gu\u00e9 charg\u00e9 des Transports (avant&#8230;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/\" \/>\n<meta property=\"og:site_name\" content=\"La Gazette\" \/>\n<meta property=\"article:published_time\" content=\"2024-01-26T10:18:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-03T07:21:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2024\/01\/Ligne-4.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"640\" \/>\n\t<meta property=\"og:image:height\" content=\"346\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Maurice Zytnicki\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Maurice Zytnicki\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/\"},\"author\":{\"name\":\"Maurice Zytnicki\",\"@id\":\"https:\/\/sceaux-lagazette.fr\/#\/schema\/person\/060ab8fc058c4220d9079707a58da9f1\"},\"headline\":\"Prolongement de la ligne 4 vers Ch\u00e2tenay-Malabry\u00a0: de nouvelles \u00e9tudes\",\"datePublished\":\"2024-01-26T10:18:21+00:00\",\"dateModified\":\"2024-04-03T07:21:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/\"},\"wordCount\":865,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/sceaux-lagazette.fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2024\/01\/Ligne-4.jpg\",\"articleSection\":[\"Ch\u00e2tenay-Malabry\",\"Les plus lus\",\"projets politiques\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/\",\"url\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2024\/01\/26\/prolongement-de-la-ligne-4-vers-chatenay-malabry-de-nouvelles-etudes\/\",\"name\":\"Prolongement de la ligne 4 vers Ch\u00e2tenay-Malabry\u00a0: de nouvelles \u00e9tudes - 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