{"id":29596,"date":"2026-02-16T11:34:53","date_gmt":"2026-02-16T10:34:53","guid":{"rendered":"https:\/\/blog.ptvgroup.com\/?p=29596"},"modified":"2026-02-27T09:08:00","modified_gmt":"2026-02-27T08:08:00","slug":"ptv-visum-accessibility-analysis-tools-setup-austin-case-study","status":"publish","type":"post","link":"https:\/\/blog.ptvgroup.com\/en\/technologieplus\/ptv-visum-accessibility-analysis-tools-setup-austin-case-study\/","title":{"rendered":"PTV Visum accessibility analysis: tools, setup, Austin case study"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<div class=\"wp-block-yoast-seo-table-of-contents yoast-table-of-contents\"><h2>Table of contents<\/h2><ul><li><a href=\"#h-what-is-accessibility-in-transport-planning\" data-level=\"2\">What Is Accessibility in Transport Planning?<\/a><\/li><li><a href=\"#h-why-transit-accessibility-analysis\" data-level=\"2\">Why Transit Accessibility Analysis?<\/a><\/li><li><a href=\"#h-utility-measuring-travel-acceptance\" data-level=\"2\">Utility: Measuring Travel Acceptance<\/a><\/li><li><a href=\"#h-accessibility-results\" data-level=\"2\">Accessibility Results<\/a><ul><li><a href=\"#h-1-accessibility-mapping\" data-level=\"3\">1. Accessibility Mapping<\/a><\/li><li><a href=\"#h-2-travel-time-class-analysis\" data-level=\"3\">2. Travel Time Class Analysis<\/a><\/li><\/ul><\/li><li><a href=\"#h-comparing-analysis-methods\" data-level=\"2\">Comparing Analysis Methods<\/a><\/li><li><a href=\"#h-model-setup-in-ptv-visum\" data-level=\"2\">Model Setup in PTV Visum<\/a><\/li><li><a href=\"#h-conclusion\" data-level=\"2\">Conclusion<\/a><\/li><\/ul><\/div>\n\n\n\n<p>For transportation and urban planners, accessibility analysis is key to creating inclusive and equitable mobility. As cities grow and diversify, planners must ensure that all residents, regardless of age, income, or ability, can access essential services and opportunities. PTV Visum, the <a href=\"https:\/\/blog.ptvgroup.com\/en\/technologyplus\/streamlining-transport-planning-enhancing-integration-with-ptv-visum\/\" target=\"_blank\" rel=\"noreferrer noopener\">leading transportation planning software<\/a>, offers robust tools for analyzing and visualizing accessibility. As a result, professionals can make informed decisions that promote fairness in mobility systems.<\/p>\n\n\n\n<p>This article dives into the fundamentals, methodologies, and technical setup of accessibility analysis in PTV Visum, using a detailed case study of the Greater Austin area as an example. <\/p>\n\n\n\n<p>Note: The article is based on <a href=\"https:\/\/www.youtube.com\/watch?v=bszy8KcrTBM&amp;list=PLgTNyzV5s59g45gylKVvwinbECPk8_CIZ&amp;index=2\" target=\"_blank\" rel=\"noreferrer noopener\">episode 5 of PTV Talks \u2013 Spotlight Series<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-accessibility-in-transport-planning\"><strong>What Is Accessibility in Transport Planning?<\/strong><\/h2>\n\n\n\n<p>In the context of mobility, accessibility refers to the ease with which people can reach desired destinations, such as jobs, schools, hospitals, and other services. Technically, <a href=\"https:\/\/blog.ptvgroup.com\/en\/modeling-planning\/accessibility-analysis-how-to-plan-people-centered-mobility\/\" target=\"_blank\" rel=\"noreferrer noopener\">accessibility is defined<\/a> as the number of attraction units (e.g., jobs, university seats, or hospital beds) that can be reached from a given zone, weighted by the desirability or acceptance of associated travel.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e5a7f4a48b0&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e5a7f4a48b0\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"225\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access1.png\" alt=\"PTV Visum accessibility analysis showing utility weighted opportunities from one origin\" class=\"wp-image-29594\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access1.png 500w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access1-300x135.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Accessibility concept: From one origin, opportunities weighted by travel utility<\/figcaption><\/figure>\n\n\n\n<p>For example, the number of jobs reachable within a 30-minute commute from home reflects a person\u2019s access to employment opportunities. Importantly, accessibility is not solely about travel time or distance; it can also consider comfort, affordability, and safety.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e5a7f4a5010&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e5a7f4a5010\" class=\"wp-block-image size-full is-resized wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"204\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access2_NEW-scaled.png\" alt=\"Accessibility equals the sum of travel utility multiplied by attraction at destinations\" class=\"wp-image-29786\" style=\"width:500px;height:auto\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access2_NEW-scaled.png 2560w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access2_NEW-640x51.png 640w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access2_NEW-1110x88.png 1110w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access2_NEW-768x61.png 768w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access2_NEW-1536x122.png 1536w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access2_NEW-2048x163.png 2048w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access2_NEW-300x24.png 300w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Accessibility = sum of travel utility \u00d7 attraction at destinations<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-transit-accessibility-analysis\"><strong>Why Transit Accessibility Analysis?<\/strong><\/h2>\n\n\n\n<p>Public transportation is central to accessibility analysis because it serves a broad population, including people who cannot or choose not to drive. Children, seniors, and individuals with limited financial resources often depend on public transportation. Improving transit accessibility promotes social equity by offering everyone the same opportunity to access essential services and opportunities. <\/p>\n\n\n\n<p>Furthermore, encouraging shifts in transportation mode from private vehicles to public transit contributes to environmental sustainability. It reduces infrastructure costs, which further supports equitable growth.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-utility-measuring-travel-acceptance\"><strong>Utility: Measuring Travel Acceptance<\/strong><\/h2>\n\n\n\n<p>Accessibility calculations in Visum are based on a utility function representing travel acceptance. This function reflects how likely people are to consider a trip &#8220;desirable&#8221; based on impedance factors, such as travel time. The utility function is typically modeled using an exponential decay function:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"90\" height=\"22\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/image.png\" alt=\"\" class=\"wp-image-29601\"\/><\/figure>\n\n\n\n<p>Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>U<sub>ij <\/sub>is the desirability (utility) of travel from origin i to destination<\/li>\n\n\n\n<li>Imp<sub>ij <\/sub>is the difficulty (impedance) of travel from origin i to destination j<\/li>\n\n\n\n<li>\u03b2\\beta is a sensitivity factor (calibration parameter)<\/li>\n<\/ul>\n\n\n\n<p>For example, a \u03b2 value of 0.015 might indicate that 80% of users would accept a 15-minute trip, while only 40% would accept a 60-minute trip. The steepness of this decay curve changes with \u03b2, so it must be selected carefully, either by referencing similar regional models, conducting surveys, or analyzing available travel data.<\/p>\n\n\n\n<p>Importantly, impedance isn&#8217;t limited to time alone. It can also account for cost, physical effort, safety, or discomfort (e.g., overcrowding or poor station conditions).<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e5a7f4a61cc&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e5a7f4a61cc\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"339\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access3.png\" alt=\"Exponential utility curves show acceptance falling with time; larger \u03b2 gives steeper decline\" class=\"wp-image-29590\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access3.png 500w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access3-295x200.png 295w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Travel acceptance decays with time; higher \u03b2 gives steeper drop<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-accessibility-results\"><strong>Accessibility Results<\/strong><\/h2>\n\n\n\n<p>PTV Visum supports two main methods of visualizing accessibility:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-accessibility-mapping\"><strong>1. Accessibility Mapping<\/strong><\/h3>\n\n\n\n<p>Each zone is color-coded based on the value of accessibility (total number of attraction units (e.g., jobs) weighted by travel utility). The result is a continuous, <a href=\"https:\/\/blog.ptvgroup.com\/en\/modeling-planning\/ptv-hub-cool-features-mobility-projects\/\">visually intuitive map<\/a> that highlights spatial disparities in opportunity.<\/p>\n\n\n\n<p>In Visum, users can:<\/p>\n\n\n\n<p>\u2022 Select the <strong>data layer<\/strong> representing attraction potential<\/p>\n\n\n\n<p>\u2022 Choose the <strong>impedance matrix<\/strong> (e.g., perceived journey time).<\/p>\n\n\n\n<p>\u2022 Enter the <strong>\u03b2 factor<\/strong>.<\/p>\n\n\n\n<p>\u2022 <strong>Save results<\/strong> as scalar values per zone or in matrix format for deeper analysis.<\/p>\n\n\n\n<p>This method is ideal for comparing neighborhood accessibility and identifying underserved areas.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e5a7f4a6b53&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e5a7f4a6b53\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"243\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access4_NEW.png\" alt=\"PTV Visum accessibility map with zones shaded by utility weighted jobs and setup dialog\" class=\"wp-image-29784\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access4_NEW.png 500w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access4_NEW-300x146.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Accessibility mapping in Visum: utility weighted jobs by zone<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-travel-time-class-analysis\"><strong>2. Travel Time Class Analysis<\/strong><\/h3>\n\n\n\n<p>This approach classifies accessibility into defined travel time intervals (e.g., jobs reachable within 15, 30, 45, or 60 minutes). For each zone, planners can create a table or graph showing the number of reachable jobs in each time class.<\/p>\n\n\n\n<p>Although less visually striking, this method provides clarity for numeric comparisons and supports reporting and benchmarking. It complements the aggregate method by providing more tangible and easier-to-interpret results in policy contexts.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e5a7f4a71b9&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e5a7f4a71b9\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"276\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access5.png\" alt=\"Per zone bar charts of jobs reachable by 15, 30, 45, and 60 minute travel band\" class=\"wp-image-29586\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access5.png 500w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access5-300x166.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Per zone bar charts show jobs reachable by time band<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-comparing-analysis-methods\"><strong>Comparing Analysis Methods<\/strong><\/h2>\n\n\n\n<p>To provide context for accessibility analysis, it\u2019s helpful to compare it with two other methods:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Isochrone analysis:<\/strong> <a href=\"https:\/\/blog.ptvgroup.com\/en\/user-insights\/making-modelling-easy-for-development-planning-and-public-transport-assessment\/\" target=\"_blank\" rel=\"noreferrer noopener\">This method<\/a> shows travel time from or to a single point, but it ignores land use at the origin or destination.<br><br><\/li>\n\n\n\n<li><strong>Catchment Area Analysis:<\/strong> Focuses on service areas around stops or stations, but does not consider travel time or connectivity.<\/li>\n<\/ul>\n\n\n\n<p>By contrast, accessibility analysis combines the spatial dimension of land use with network performance, offering a more holistic view of mobility equity as a complement to the other two methods.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e5a7f4a78c1&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e5a7f4a78c1\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"328\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access6.png\" alt=\"Single origin isochrones showing equal time contours; travel time only, not land use\" class=\"wp-image-29584\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access6.png 500w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access6-300x197.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Single origin isochrones: travel time bands, not land use or demand<\/figcaption><\/figure>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e5a7f4a7e0a&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e5a7f4a7e0a\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"280\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access7.png\" alt=\"Catchment (walkshed) coverage around stops by mode; indicates local reach, not travel time\" class=\"wp-image-29582\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access7.png 500w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access7-320x180.png 320w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access7-300x168.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Catchment areas around stops: coverage without network travel time<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-model-setup-in-ptv-visum\"><strong>Model Setup in PTV Visum<\/strong><\/h2>\n\n\n\n<p>There are several key steps to setting up an accessibility model in PTV Visu:<\/p>\n\n\n\n<p><strong>1. Data Collection<\/strong>: For the Austin case study, which I presented in <a href=\"https:\/\/www.youtube.com\/watch?v=bszy8KcrTBM&amp;list=PLgTNyzV5s59g45gylKVvwinbECPk8_CIZ&amp;index=2\" target=\"_blank\" rel=\"noreferrer noopener\">the webinar<\/a> (from 08:05), population and employment data from the U.S. Census Bureau was used, along with GTFS feeds from the local transit provider (CapMetro).<\/p>\n\n\n\n<p><strong>2. GTFS Import<\/strong>: GTFS data is imported into Visum, creating a blank model with all transit lines and schedules. Care must be taken to correctly configure calendar periods.<\/p>\n\n\n\n<p><strong>3. Transit Network Integration<\/strong>: When multiple operators exist, their GTFS data must be merged. Visum\u2019s public transport supply import dialogue helps combine these datasets into a single, functional model.<\/p>\n\n\n\n<p><strong>4. Network Simplification and Walk Links<\/strong>: To ensure a realistic model, redundant network elements are consolidated and walking networks from OpenStreetMap are merged to simulate pedestrian transfers.<\/p>\n\n\n\n<p><strong>5. Zone Connections<\/strong>: Zones (e.g., 1,800 census block groups) are connected to the network using PT connectors. This can be done via built-in methods or custom add-ins.<\/p>\n\n\n\n<p><strong>6. Impedance Matrix Setup<\/strong>: Travel times are adjusted to reflect perceived difficulty, e.g., walk times are tripled, and 10-minute penalties are added per transfer. These adjustments influence the impedance matrix used in utility calculations.<\/p>\n\n\n\n<p><strong>7. Running the Analysis<\/strong>: Once all components are in place, the accessibility matrix is computed. Then, the results can be visualized using the above-described methods, which enables planners to identify mobility gaps and opportunities.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e5a7f4a8661&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e5a7f4a8661\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"284\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access8.png\" alt=\"Transit supply imported into PTV Visum for Austin with counts of lines, stops, and journeys\" class=\"wp-image-29580\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access8.png 500w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2026\/02\/Access8-300x170.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Transit supply imported into Visum: lines, stops, journeys (Austin) <\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>Accessibility analysis in PTV Visum enables transportation professionals to design more <a href=\"https:\/\/blog.ptvgroup.com\/en\/modeling-planning\/optimizing-public-transport-network-of-gijon-with-ptv-visum\/\" target=\"_blank\" rel=\"noreferrer noopener\">equitable and efficient transit systems<\/a>. By quantifying how easily people can access essential services and identifying gaps, this approach ensures that infrastructure investments deliver inclusive benefits. Whether visualized through detailed maps or tabular comparisons, accessibility metrics are essential for data-driven mobility planning.<\/p>\n\n\n\n<p>As cities continue working on inclusiveness and smart development, accessibility analysis will remain essential to transport planning. With tools like PTV Visum, planners can better shape a future where opportunity is within reach for all.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column cta-box is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<div class=\"wp-block-cover\"><img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"836\" class=\"wp-block-cover__image-background wp-image-25406\" alt=\"\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184.jpg 1254w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184-540x360.jpg 540w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184-936x624.jpg 936w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184-768x512.jpg 768w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184-300x200.jpg 300w\" sizes=\"auto, (max-width: 1254px) 100vw, 1254px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-80 has-background-dim wp-block-cover__gradient-background has-background-gradient\" style=\"background:linear-gradient(135deg,rgb(66,104,249) 28%,rgb(41,224,133) 88%)\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center\" style=\"font-size:24px;font-style:normal;font-weight:700\">Can an accessibility analysis improve your city?<\/p>\n\n\n\n<p class=\"has-text-align-center\">Explore powerful tools that assess mobility measures and help people travel<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-14c487f4 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-fill\"><a class=\"wp-block-button__link has-white-background-color has-text-color has-background has-link-color has-text-align-center has-custom-font-size wp-element-button\" href=\"https:\/\/www.ptvgroup.com\/en\/application-areas\/accessibility-analysis\" style=\"border-radius:8px;color:#6482f6;font-size:14px;font-style:normal;font-weight:500\" target=\"_blank\" rel=\"noreferrer noopener\">Download now<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-cover\" style=\"min-height:300px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"836\" class=\"wp-block-cover__image-background wp-image-25406\" alt=\"\" src=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184.jpg 1254w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184-540x360.jpg 540w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184-936x624.jpg 936w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184-768x512.jpg 768w, https:\/\/blog.ptvgroup.com\/wp-content\/uploads\/2024\/10\/iStock-1312502184-300x200.jpg 300w\" sizes=\"auto, (max-width: 1254px) 100vw, 1254px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-80 has-background-dim wp-block-cover__gradient-background has-background-gradient\" style=\"background:linear-gradient(135deg,rgb(66,104,249) 28%,rgb(41,224,133) 88%)\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center\" style=\"font-size:24px;font-style:normal;font-weight:700\">Improve your city with accessibility analysis<\/p>\n\n\n\n<p class=\"has-text-align-center\">Explore powerful tools that assess mobility measures and help people travel.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-14c487f4 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-fill\"><a class=\"wp-block-button__link has-white-background-color has-text-color has-background has-link-color has-text-align-center has-custom-font-size wp-element-button\" href=\"https:\/\/www.ptvgroup.com\/en\/application-areas\/accessibility-analysis\" style=\"border-radius:4px;color:#6482f6;font-size:14px;font-style:normal;font-weight:700\" target=\"_blank\" rel=\"noreferrer noopener\">Discover now<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p class=\"card-text\">See how PTV Visum accessibility analysis helps planners map opportunity, compare isochrones and catchments, prepare GTFS transit supply, and run utility based metrics &#8211; illustrated with Austin. [&#8230;]<\/p>\n<p class=\"m-0\"><a class=\"btn btn-outline-secondary btn-read-more\" href=\"https:\/\/blog.ptvgroup.com\/en\/technologieplus\/ptv-visum-accessibility-analysis-tools-setup-austin-case-study\/\">Read More<\/a><\/p>\n","protected":false},"author":5,"featured_media":29578,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8333,8337],"tags":[8416,8356,8358],"ppma_author":[8496],"class_list":["post-29596","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologieplus","category-einblicke","tag-erreichbarkeit","tag-verkehrsmodellierung","tag-verkehrssimulation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PTV Visum accessibility analysis: tools, setup, and a case study | PTV Blog<\/title>\n<meta name=\"description\" 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