{"id":126271,"date":"2026-09-26T11:34:41","date_gmt":"2026-09-26T06:04:41","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=126271"},"modified":"2026-09-26T11:34:41","modified_gmt":"2026-09-26T06:04:41","slug":"high-speed-corridors","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/high-speed-corridors\/","title":{"rendered":"High-Speed Corridors: NHAI&#8217;s New Rules for India&#8217;s Expressways"},"content":{"rendered":"<h2><b>High-Speed Corridors Latest News<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">In a move to ensure uniformity and consistency in the construction of high-speed corridors \u2014 also known as access-controlled national highways or expressways \u2014 the National Highways Authority of India (NHAI) has issued detailed guidelines covering design, standards and specifications for such projects.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Until now, consultants prepared Detailed Project Reports (DPRs) for these corridors based on varying standards and specifications, leading to inconsistency across projects.<\/span><\/li>\n<\/ul>\n<h2><b>The Bigger Picture: Vision 2047<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The move gains significance because India targets 50,000 km of high-speed corridors by 2036\u201337 under Vision 2047.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">These corridors are special sections of national highways providing uninterrupted, end-to-end travel.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The total length of high-speed corridors stood at just <\/span><b>3,052 km<\/b><span style=\"font-weight: 400;\"> as of <\/span><b>December 2025<\/b><span style=\"font-weight: 400;\"> \u2014 showing the scale of expansion planned ahead.<\/span><\/li>\n<\/ul>\n<h2><b>How Traffic Will Be Assessed<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">NHAI has mandated a more rigorous approach to traffic assessment for these projects.<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Assessment must include existing, generated, induced, and diverted traffic, based on proper traffic modelling.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Freight growth rate must be analysed considering economic development.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Traffic data must be validated from secondary sources such as toll transactions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">For freight traffic and determining the Vehicle Damage Factor (VDF), data from GST portals, mining departments and other sources must be cross-validated.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><b>Lane Configuration Norms<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The guidelines set clear, traffic-based thresholds for how many lanes a corridor should have:<\/span><\/li>\n<li aria-level=\"1\"><img decoding=\"async\" src=\"https:\/\/vajiramias.sgp1.cdn.digitaloceanspaces.com\/wp\/current-affairs\/2026\/09\/26065329\/Lane-Configuration-Norms.jpg\" alt=\"Lane Configuration Norms\" title=\"Lane Configuration Norms\" class=\"my-image my-image-size-full my-image-align-none\" style=\"width: auto; height: 203px;\" \/><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">This tiered approach ensures highways are built to match actual and projected traffic volumes, rather than a one-size-fits-all design.<\/span><\/li>\n<\/ul>\n<h2><b>Access Control and Design Standards<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The core principle behind access-controlled highways is protecting the speed of <\/span><b>long-distance through traffic<\/b><span style=\"font-weight: 400;\"> from local interference.<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Access must be planned so that through traffic can move at the speed set by the main highway flow \u2014 not slowed by local, access, or cross traffic.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">There shall be no at-grade intersection of any road with the project highway.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Access to the highway must be through <\/span><b>properly designed ramps<\/b><span style=\"font-weight: 400;\"> at planned locations.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Underpass height:<\/b><span style=\"font-weight: 400;\"> In areas with frequent operation of heavy agricultural machinery \u2014 harvesters and laden tractors \u2014 underpass height may be set at <\/span><b>4.50 metres<\/b><span style=\"font-weight: 400;\">, accommodating farm vehicle movement.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Service roads:<\/b><span style=\"font-weight: 400;\"> These must be provided in <\/span><b>built-up and urban sections on both sides<\/b><span style=\"font-weight: 400;\">, along with a <\/span><b>drain-cum-footpath<\/b><span style=\"font-weight: 400;\">, ensuring local connectivity and pedestrian safety alongside the high-speed corridor.<\/span><\/li>\n<\/ul>\n<h2><b>Signage and Road Marking Standards<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">NHAI has also standardised signage placement for driver clarity and safety:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Full overhead gantries (carrying direction signs) shall be placed 5 km and 2 km ahead of an exit.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Cantilever gantries (carrying advance direction signs) shall be placed 1 km and 500 metres before the exit.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Lane and other markings must be 150 mm wide.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Edge-lane markings must be 200 mm wide.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><b>Barrier-Less Tolling and Corridor Protection<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">NHAI is shifting towards a Multi-Lane Free Flow (MLFF) system \u2014 essentially a barrier-less tolling mechanism that allows vehicles to pass through toll points without stopping.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The new guidelines require provisions for this system to be incorporated into corridor layout design from the outset.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Preventing encroachment: To stop unauthorised access and encroachment on high-speed corridors, a 1-metre-high RCC (Reinforced Cement Concrete) boundary wall must be constructed along the extreme outer edge of the Right of Way (ROW).<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">ROW refers to the total width of land legally acquired or owned by the government or road authority for construction, operation, maintenance, and future highway expansion.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><b>Green and Sustainable Design Elements<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The guidelines also embed environmental considerations into corridor planning:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Drip irrigation<\/b><span style=\"font-weight: 400;\"> will be provided in the median for watering plants.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Tree plantation<\/b><span style=\"font-weight: 400;\"> will be made an integral part of project design at the DPR stage itself \u2014 not an afterthought.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><b>Conclusion<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">NHAI&#8217;s new rules replace guesswork with a uniform rulebook \u2014 from lane width to tree plantation.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">As India races toward 50,000 km of high-speed corridors, consistency in design will matter as much as the pace of construction. Standardisation today prevents costly retrofits tomorrow.<\/span><\/li>\n<\/ul>\n<p><strong>Source: <a href=\"https:\/\/indianexpress.com\/article\/explained\/nhai-high-speed-corridor-guidelines-expressway-rules-10888873\/\" target=\"_blank\" rel=\"nofollow noopener\">IE<\/a> | <a href=\"https:\/\/www.pib.gov.in\/PressReleasePage.aspx?PRID=2313032&amp;reg=3&amp;lang=1\" target=\"_blank\" rel=\"nofollow noopener\">PIB<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>High-speed corridors get new NHAI standards covering traffic assessment, lane configuration, access control, tolling, signage and sustainable highway design.<\/p>\n","protected":false},"author":18,"featured_media":126286,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[10498,60,22,59],"class_list":["post-126271","post","type-post","status-publish","format-standard","has-post-thumbnail","category-upsc-mains-current-affairs","tag-high-speed-corridors","tag-mains-articles","tag-upsc-current-affairs","tag-upsc-mains-current-affairs","no-featured-image-padding"],"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/126271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=126271"}],"version-history":[{"count":3,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/126271\/revisions"}],"predecessor-version":[{"id":126312,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/126271\/revisions\/126312"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/126286"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=126271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=126271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=126271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}