{"id":10555,"date":"2025-08-05T13:32:28","date_gmt":"2025-08-05T17:32:28","guid":{"rendered":"https:\/\/www.trafficsafetystore.com\/blog\/?p=10555"},"modified":"2025-08-05T13:46:20","modified_gmt":"2025-08-05T17:46:20","slug":"when-to-use-a-28-traffic-cone-or-a-36-traffic-cone","status":"publish","type":"post","link":"https:\/\/www.trafficsafetystore.com\/blog\/when-to-use-a-28-traffic-cone-or-a-36-traffic-cone\/","title":{"rendered":"When to use a 28&#8243; Traffic Cone or a 36&#8243; Traffic Cone"},"content":{"rendered":"<article><header>\r\n<h1>28&#8243; vs 36&#8243; Traffic Cones \u2013 When (and <em>Why<\/em>) to Use Each Size<\/h1>\r\nTraffic Safety Store\r\n\r\n<time datetime=\"2025-08-05\">August 5, 2025<\/time>\r\n\r\n<\/header><section id=\"intro\">Traffic-cone height isn\u2019t just a matter of preference; it directly affects how soon drivers\r\nsee a work zone, how stable the cone stays in wind drafts, and whether the setup passes\r\ninspection. Below is a practical guide\u2014grounded in the newest\r\n<a href=\"https:\/\/mutcd.fhwa.dot.gov\/pdfs\/11th_Edition\/mutcd11thedition.pdf\" rel=\"nofollow\" aria-label=\"Download MUTCD 11th Edition (PDF)\">MUTCD 11<sup>th<\/sup> Edition<\/a> language and\r\ncommon state DOT specifications\u2014to help you choose confidently. If you need cones shipped\r\nfast, visit our <a href=\"https:\/\/www.trafficsafetystore.com\/traffic-cones\">Traffic\r\nCone selection<\/a> at Traffic Safety Store.<\/section><section id=\"regulatory-baseline\">\r\n<h2>1. The Regulatory Baseline (MUTCD 11<sup>th<\/sup> Edition)<\/h2>\r\nAccording to the MUTCD 11th Edition (Section 6F.65):\r\n<ul>\r\n \t<li><strong>Daytime &amp; low-speed roadways<\/strong> \u2013 minimum height 18 inches. Low-speed is typically considered roadways with speed limits of 40 mph or less.<\/li>\r\n \t<li><strong>Nighttime use, or roadways with a speed limit of 45 mph or higher<\/strong> \u2013 minimum height 28 inches.<\/li>\r\n \t<li><strong>Freeways, other high-speed highways, or when more conspicuous guidance is needed<\/strong> \u2013 minimum height 28 inches.<\/li>\r\n \t<li><strong>Cones more than 36 inches in height<\/strong> require horizontal, circumferential, alternating orange and white retroreflective stripes that are 4 to 6 inches wide, with a minimum of two orange and two white stripes (top stripe orange).<\/li>\r\n<\/ul>\r\nIn plain English, <strong>28 inches is the smallest cone that meets federal rules for freeways,\r\nexpressways, high-speed roadways (45 mph or higher), and all night work<\/strong>.\r\n\r\n<\/section><section id=\"retroreflectivity\">\r\n<h2>Retroreflectivity Requirements<\/h2>\r\nFor maximum visibility, especially at night, cones must be retroreflectorized:\r\n<ul>\r\n \t<li>Cones less than 28 inches: At least one 6-inch wide retroreflective band placed a minimum of 3 inches from the top.<\/li>\r\n \t<li>Cones 28 to 36 inches: A 6-inch wide white band located 3 to 4 inches from the top, and an additional 4-inch wide white band located approximately 2 inches below the 6-inch band.<\/li>\r\n \t<li>Cones more than 36 inches: As noted above, alternating orange and white stripes.<\/li>\r\n<\/ul>\r\n<\/section><section id=\"why-36\">\r\n<h2>2. Why Some Agencies Prefer 36 Inches<\/h2>\r\nWhile the MUTCD sets the minimum at 28 inches for high-speed and nighttime conditions, many agencies and projects opt for 36-inch cones for enhanced visibility, stability, and compliance with stricter local guidelines. For example, North Carolina DOT mandates 36-inch cones on freeways and interstates. Typical reasons include:\r\n<table aria-label=\"Visibility and Stability Comparison\">\r\n<thead>\r\n<tr>\r\n<th scope=\"col\">Factor<\/th>\r\n<th scope=\"col\"><a href=\"https:\/\/www.trafficsafetystore.com\/traffic-cones\/28\">28&#8243; Cone<\/a><\/th>\r\n<th scope=\"col\"><a href=\"https:\/\/www.trafficsafetystore.com\/traffic-cones\/36\">36&#8243; Cone<\/a><\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td>Visibility from driver eye-height (e.g., SUV or truck)<\/td>\r\n<td>May be obscured by vehicle hood or glare<\/td>\r\n<td>Better line-of-sight above most vehicle hoods<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Retroreflective surface area<\/td>\r\n<td>Standard two bands (6&#8243; + 4&#8243; white)<\/td>\r\n<td>Larger overall surface; can accommodate optional additional banding<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Wind and stability<\/td>\r\n<td>Lighter weight\u2014may require ballast rings to prevent tipping<\/td>\r\n<td>Heavier base provides natural resistance to wind and minor impacts<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Compliance margin<\/td>\r\n<td>Meets MUTCD minimum for high-speed\/nighttime<\/td>\r\n<td>Exceeds minimum; often preferred or required by state DOTs for freeways<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nAlways check your state DOT or project specifications, as some may recommend or mandate 36 inches on interstates or high-volume roads for added safety.\r\n\r\n<\/section><section id=\"use-28\">\r\n<h2>3. When a 28-Inch Cone Is the Right Tool<\/h2>\r\n<ul>\r\n \t<li><strong>Urban streets with speeds \u2264 40 mph<\/strong> \u2013 suitable for lane closures, utility work, and short tapers.<\/li>\r\n \t<li><strong>Daytime operations on low-volume or two-lane roads<\/strong> \u2013 lighter and easier to deploy for mobile crews.<\/li>\r\n \t<li><strong>Parking lots, school zones, or special events<\/strong> \u2013 portable yet tall enough to guide pedestrians and vehicles.<\/li>\r\n \t<li><strong>Night work on low-speed roads with proper retroreflective bands<\/strong> \u2013 must include the required two-band pattern (6&#8243; + 4&#8243; white).<\/li>\r\n<\/ul>\r\n<\/section><section id=\"use-36\">\r\n<h2>4. When to Deploy 36-Inch Cones<\/h2>\r\n<ul>\r\n \t<li><strong>Speeds \u2265 45 mph (freeways, expressways, multilane arterials)<\/strong> \u2013 for better visibility and stability.<\/li>\r\n \t<li><strong>Nighttime work on high-volume or high-speed roads<\/strong> \u2013 exceeds minimum requirements for safety.<\/li>\r\n \t<li><strong>Long-term or multi-day closures<\/strong> \u2013 heavier design reduces need for frequent adjustments.<\/li>\r\n \t<li><strong>Areas with heavy truck traffic, blind curves, or crests<\/strong> \u2013 provides extra conspicuity.<\/li>\r\n \t<li><strong>Projects with stricter local mandates<\/strong> \u2013 verify with your state DOT (e.g., NCDOT mandates 36&#8243; for freeways; Caltrans recommends for urban freeways).<\/li>\r\n<\/ul>\r\n<\/section><section id=\"decision-flow\">\r\n<h2>5. Quick Decision Flow<\/h2>\r\n<ol>\r\n \t<li><strong>Assess posted speed limit:<\/strong>\r\n<ul>\r\n \t<li>&lt; 45 mph \u2192 consider 28&#8243; as starting point.<\/li>\r\n \t<li>\u2265 45 mph \u2192 default to 36&#8243; for enhanced safety.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li><strong>Day or night operations?<\/strong>\r\n<ul>\r\n \t<li>Night work requires at least 28&#8243;; prefer 36&#8243; on high-speed roads for better visibility.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li><strong>Job duration and exposure:<\/strong>\r\n<ul>\r\n \t<li>Short, mobile, low-speed daytime tasks \u2192 28&#8243;.<\/li>\r\n \t<li>Stationary, multi-day closures on busy roads \u2192 36&#8243;.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li><strong>Local specs override MUTCD minimums:<\/strong> Always review state DOT guidelines and contract documents.<\/li>\r\n<\/ol>\r\n<\/section><section id=\"takeaways\">\r\n<h2>6. Final Takeaways<\/h2>\r\n<strong>Cone height is a critical safety factor, not just a preference.<\/strong> A 28-inch cone satisfies the federal minimum for high-speed or nighttime work, but a 36-inch cone offers superior visibility, stability, and alignment with many agency preferences. Combine appropriate cone height with correct retroreflective banding and spacing (per MUTCD Tables 6B-3 &amp; 6B-4) to create a clear, consistent guide for drivers. <em>When uncertain, opt for larger sizes<\/em>\u2014the added cost is often offset by lower risk and maintenance needs.\r\n\r\n<\/section><footer><strong>Disclaimer:<\/strong> This article provides general information only. Traffic Safety Store does not offer legal advice. Consult the latest MUTCD edition, your state DOT specifications, and project documents for precise requirements in your work zone.<\/footer><\/article><footer>\r\n\r\n<hr \/>\r\n\r\n<\/footer><footer><img decoding=\"async\" class=\"wp-image-10562 aligncenter lazyload\" data-src=\"http:\/\/www.trafficsafetystore.com\/blog\/wp-content\/uploads\/Screenshot-2025-08-05-at-11.46.21-AM-1-221x300.png\" alt=\"\" width=\"464\" height=\"630\" data-srcset=\"https:\/\/www.trafficsafetystore.com\/blog\/wp-content\/uploads\/Screenshot-2025-08-05-at-11.46.21-AM-1-221x300.png 221w, https:\/\/www.trafficsafetystore.com\/blog\/wp-content\/uploads\/Screenshot-2025-08-05-at-11.46.21-AM-1.png 390w\" data-sizes=\"(max-width: 464px) 85vw, 464px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 464px; --smush-placeholder-aspect-ratio: 464\/630;\" \/><\/footer>\r\n\r\n<hr \/>\r\n\r\n<footer>\u00a9 2025 Traffic Safety Store. 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Choose <a href=\"https:\/\/www.trafficsafetystore.com\/\">Traffic Safety Store<\/a>.<\/p>\r\n&nbsp;","protected":false},"excerpt":{"rendered":"<p>28&#8243; vs 36&#8243; Traffic Cones \u2013 When (and Why) to Use Each Size Traffic Safety Store August 5, 2025 Traffic-cone height isn\u2019t just a matter of preference; it directly affects how soon drivers see a work zone, how stable the cone stays in wind drafts, and whether the setup passes inspection. Below is a practical guide\u2014grounded in the newest MUTCD &hellip; <a href=\"https:\/\/www.trafficsafetystore.com\/blog\/when-to-use-a-28-traffic-cone-or-a-36-traffic-cone\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;When to use a 28&#8243; Traffic Cone or a 36&#8243; Traffic Cone&#8221;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":10561,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[617,13],"tags":[285,686,687],"class_list":["post-10555","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-work-zone","category-traffic-safety","tag-traffic-cones","tag-28-inch-traffic-cone","tag-36-traffic-cone"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.6 (Yoast SEO v25.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>When to use a 28&quot; Traffic Cone or a 36&quot; Traffic Cone - Traffic Safety Resource Center<\/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:\/\/www.trafficsafetystore.com\/blog\/when-to-use-a-28-traffic-cone-or-a-36-traffic-cone\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"When to use a 28&quot; Traffic Cone or a 36&quot; Traffic Cone\" \/>\n<meta property=\"og:description\" content=\"28&#8243; vs 36&#8243; Traffic Cones \u2013 When (and Why) to Use Each Size Traffic Safety Store August 5, 2025 Traffic-cone height isn\u2019t just a matter of preference; it directly affects how soon drivers see a work zone, how stable the cone stays in wind drafts, and whether the setup passes inspection. 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vs 36&#8243; Traffic Cones \u2013 When (and Why) to Use Each Size Traffic Safety Store August 5, 2025 Traffic-cone height isn\u2019t just a matter of preference; it directly affects how soon drivers see a work zone, how stable the cone stays in wind drafts, and whether the setup passes inspection. 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