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<!DOCTYPE html> <html lang="en"> <head>  <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta name="msvalidate.01" content="44D41FB1AC5699252BC80EEF9FDD7F12" /> <title>Core Highway Topics | Federal Highway Administration</title> <link href="/css/fhwa2/screen.css" media="screen" rel="stylesheet" type="text/css" />  <link href="/css/fhwa2/dropdown.css" rel="stylesheet" type="text/css" />  <link href="/css/fhwa2/print.css" media="print" rel="stylesheet" type="text/css" />  <link rel="icon" href="/images/fhwa2/icon/favicon.ico" type="image/x-icon" />  <link rel="apple-touch-icon" href="/images/fhwa2/icon/appledotseal.png" /> <link rel="image_src" href="/images/fhwa2/icon/imgdotseallg.png" /> <script type="text/javascript" src="/includes/fhwaload.js"></script>  </head> <body id="resources" class="nofhwaheadernav"> <a id="top"></a>  <div class="printonly"> <p>U.S. Department of Transportation<br /> <span id="printfhwatitle">Federal Highway Administration</span><br /> 1200 New Jersey Avenue, SE<br />Washington, DC 20590<br /> 202-366-4000</p> <hr /> </div> <div id="fhwaheader"> <div class="fhwacontainer"> <a href="#content" class="floatleft noprint" tabindex="1"><img src="/images/1x1.gif" width="1" height="1" alt="Skip to content" /></a> <div class="logo"> <a href="https://highways.dot.gov/" tabindex="2"><img class="imgdotfhwalg" src="/images/fhwa2/bg/imgdotfhwalg.png" alt="U.S. Department of Transportation/Federal Highway Administration" /><img class="imgdotfhwasm" src="/images/fhwa2/bg/imgdotfhwasm.png" alt="U.S. Department of Transportation/Federal Highway Administration" /></a> </div> <div class="dropdown"> <ul> <li class="arrow-whtdwn mnabout"><a href="/about/" tabindex="3">About</a> <ul> <li><a href="https://highways.dot.gov/about/fhwa-organization">FHWA Organization</a></li> <li><a href="https://highways.dot.gov/about/headquarters-offices">Headquarters 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alt="Submit Search" title="Submit Search" /> </form> </fieldset> </div>  <div class="mainnav"> <div class="dropdown"> <ul><li class="arrow-whtdwn mnabout"><a href="https://highways.dot.gov/about/about-fhwa" title="About" tabindex="15"><span class="adjleftmgn">About</span></a> <ul> <li><a href="https://highways.dot.gov/about/fhwa-organization">FHWA Organization</a></li> <li><a href="https://highways.dot.gov/about/headquarters-offices">Headquarters Offices</a></li> <li><a href="https://highways.dot.gov/about/field-offices">Field Offices</a></li> <li><a href="https://highways.dot.gov/careers">Careers</a></li> <li><a href="https://highways.dot.gov/about/fhwa-strategic-plan">Strategic Plan</a></li> <li><a href="https://highways.dot.gov/about/business-opportunities">Business Opportunities</a></li> <li><a href="https://highways.dot.gov/about/staff-directories">Staff Directories</a></li> <li><a href="https://highways.dot.gov/highway-history">Highway History</a></li> </ul> </li> <li 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class="activesub" href="/resources/topics/" title="Core Highway Topics"> Core Highway Topics</a></li> <li><a href="https://highways.dot.gov/fed-aid-essentials" title="Federal-Aid Essentials">Federal-Aid Essentials</a></li> <li><a href="https://highways.dot.gov/automation" title="Automation">Automation</a></li> <li><a href="https://highways.dot.gov/complete-streets" title="Complete Streets">Complete Streets</a></li> <li><a href="https://highways.dot.gov/resources/publications-statistics" title="Publications & Statistics">Publications & Statistics</a></li> <li><a href="/resources/legsregs/" title="Laws & Regulations">Laws & Regulations</a></li> <li><a href="/pgc/" title="Policy & Guidance Center">Policy & Guidance Center</a></li> <li><a href="https://highways.dot.gov/section-508" title="Section 508">Section 508</a></li> <li><a href="/resources/training.cfm" title="Professional Development">Professional Development</a></li> <li><a href="https://www.nhi.fhwa.dot.gov/">National Highway Institute (NHI)</a></li> <li><a href="/resourcecenter/" title="Resource Center">Resource Center</a></li> <li><a href="https://highways.dot.gov/resources/accessibility-resource-library" title="Accessibility Resource Library">Accessibility Resource Library</a></li> <li><a href="https://highways.dot.gov/research/resources/research-library/federal-highway-administration-research-library" title="FHWA Research Library">FHWA Research Library</a></li> </ul> </li> <li class="arrow-whtdwn mnbriefing"><a href="https://highways.dot.gov/newsroom" title="Briefing Room" tabindex="17"><span>Briefing Room</span></a> <ul><li><a href="https://highways.dot.gov/newsroom/press-releases" title="Press Releases">Press Releases</a></li> <li><a href="https://highways.dot.gov/newsroom/speeches-and-testimony" title="Speeches & Testimony">Speeches & Testimony</a></li> <li><a href="https://www.flickr.com/photos/fhwa/" title="Photos" target="_blank" rel="noopener noreferrer">Photos</a></li> <li><a href="https://www.youtube.com/user/USDOTFHWA/featured" title="Videos" target="_blank" rel="noopener noreferrer">Videos</a></li> <li><a href="https://highways.dot.gov/newsroom/media-contacts" title="Media Contacts">Media Contacts</a></li> </ul> </li> <li class="mncontact"><a href="https://highways.dot.gov/about/contact-us" title="Contact" tabindex="18"><span>Contact</span></a></li> </ul> </div> </div> </div> </div>  <a id="content" role="link" tabindex="0" title="Content begins"></a>   <div id="fhwabreadcrumbs" class="fhwacontainer"><p><a href="/">Home</a> / <a href="/resources/">Resources</a></p></div>   <div id="fhwacontent" class="fhwacontainer"> <div id="sectiontitle"><p>Resources</p></div>  <div class="subnav"> <ul> <li><a class="activesub" href="/resources/topics/" title="Core Highway Topics"> Core Highway Topics</a></li> <li><a href="https://highways.dot.gov/fed-aid-essentials" title="Federal-Aid Essentials">Federal-Aid Essentials</a></li> <li><a href="https://highways.dot.gov/automation" title="Automation">Automation</a></li> <li><a href="https://highways.dot.gov/complete-streets" title="Complete Streets">Complete Streets</a></li> <li><a href="https://highways.dot.gov/resources/publications-statistics" title="Publications & Statistics">Publications & Statistics</a></li> <li><a href="/resources/legsregs/" title="Laws & Regulations">Laws & Regulations</a></li> <li><a href="/pgc/" title="Policy & Guidance Center">Policy & Guidance Center</a></li> <li><a href="https://highways.dot.gov/section-508" title="Section 508">Section 508</a></li> <li><a href="/resources/training.cfm" title="Professional Development">Professional Development</a></li> <li><a href="https://www.nhi.fhwa.dot.gov/">National Highway Institute (NHI)</a></li> <li><a href="/resourcecenter/" title="Resource Center">Resource Center</a></li> <li><a href="https://highways.dot.gov/resources/accessibility-resource-library" title="Accessibility Resource Library">Accessibility Resource Library</a></li> <li><a href="https://highways.dot.gov/research/resources/research-library/federal-highway-administration-research-library" title="FHWA Research Library">FHWA Research Library</a></li> </ul> </div>   <div class="contenttext"> <h1>Core Highway Topics</h1> <div class="crosstopics imgright"> <h3>Cross-Topic Areas</h3> <ul> <li><a href="/briefingroom/index.cfm">Public Affairs</a></li> <li><a href="data.cfm">Highway Data/System Performance</a></li> <li><a href="laws.cfm">Laws, Regulations, Policy and Directives</a></li> <li><a href="publications.cfm">Publications</a></li> <li><a href="training.cfm">Training</a></li> </ul> <ul> <li><a href="/about/org/">FHWA Organization</a></li> <li><a href="/about/field.cfm">FHWA Field Offices</a></li> <li><a href="/about/hq/">FHWA HQ Offices</a></li> <li><a href="/related.cfm">Related Sites and Resources</a></li> </ul> </div> <p><a href="alpha.cfm">Alphabetical listing of topics</a></p> <h2><a href="environment.cfm">Environment</a></h2> <ul> <li><a href="/environment/air_quality/">Air Quality</a></li> <li><a href="/environment/environmental_justice/">Environmental Justice</a></li> <li><a href="http://environment.fhwa.dot.gov/index.asp">Environmental Review Toolkit</a></li> <li><a href="/byways/">National Scenic Byways Online</a></li> <li><a href="/environment/noise/">Noise</a></li> <li><a href="/planning/public_involvement/">Public Involvement</a></li> <li><a href="/environment/sustainability/">Sustainable Transportation</a></li> </ul> <h2><a href="https://highways.dot.gov/federal-lands">Office of Federal Lands Highway</a></h2> <ul> <li><a href="https://highways.dot.gov/federal-lands/programs-access/">Federal Lands Access Program</a></li> <li><a href="https://highways.dot.gov/federal-lands/programs/transportation/">Federal Lands Transportation Program </a></li> <li><a href="https://highways.dot.gov/federal-lands/programs-planning/">Federal Lands Planning Program </a></li> <li><a href="https://highways.dot.gov/federal-lands/programs-tribal/">Tribal Transportation Program </a></li> <li><a href="https://highways.dot.gov/federal-lands/programs/significant/">Nationally Significant Federal Lands and Tribal Projects</a></li> <li><a href="https://highways.dot.gov/federal-lands/programs/defense/">Defense Access Road Program </a></li> <li><a href="https://highways.dot.gov/federal-lands/programs/stewardship-oversight/">Stewardship and Oversight </a></li> </ul> <h2><a href="funding.cfm">Highway Funding</a></h2> <ul> <li><a href="/construction/">Construction and Project Management</a></li> <li><a href="/economicrecovery/">Economic Recovery</a></li> <li><a href="financing.cfm">Federal-aid and Financing</a></li> <li><a href="https://flh.fhwa.dot.gov/programs/">Federal and Indian Lands Funding</a></li> <li><a href="/ipd/finance/">Innovative Finance Program</a></li> <li><a href="/ppp/index.htm">Public-Private Partnerships</a></li> <li><a href="/highwaytrustfund/">Status of the Highway Trust Fund</a></li> <li><a href="/cfo/funding_reports.cfm">Reports on the Status of Federal-aid Funding</a></li> <li><a href="//ops.fhwa.dot.gov/tolling_pricing/index.htm">Tolling and Pricing Program</a></li> <li><a href="https://www.transportation.gov/buildamerica/financing/tifia">Transportation Infrastructure Finance and Innovation Act (TIFIA)</a></li> </ul> <h2><a href="http://international.fhwa.dot.gov/">International</a></h2> <ul> <li><a href="/planning/border_planning/">Border Planning</a></li> </ul> <h2>Research/Technologies</h2> <ul> <li><a href="/research/tfhrc/index.cfm">Turner-Fairbank Highway Research Center (TFHRC)</a></li> <li><a href="https://ops.fhwa.dot.gov/int_its_deployment/index.htm">Intelligent Transportation Systems Research</a></li> <li><a href="/research/tfhrc/projects/safety/comprehensive/ihsdm/index.cfm">Interactive Highway Safety Design Model (IHSDM)</a></li> <li><a href="/research/topics/infrastructure/pavements/index.cfm">Pavement Research</a></li> <li><a href="/research/tfhrc/programs/safety/index.cfm">Safety Research</a></li> <li><a href="/research/topics/infrastructure/bridges/index.cfm">Structures Research</a></li> <li><a href="/research/tfhrc/labs/">TFHRC Laboratories</a></li> </ul> <h2><a href="operations.cfm">Road Operations and Congestion</a></h2> <ul> <li><a href="https://ops.fhwa.dot.gov/tim/">Traffic Incident Management (TIM)<br> </a></li> <li><a href="https://ops.fhwa.dot.gov/freight/index.cfm">Freight/Goods Movement</a></li> <li><a href="http://mutcd.fhwa.dot.gov/">Manual on Uniform Traffic Control Devices (MUTCD)</a></li> <li><a href="/trafficinfo/index.htm">National Traffic and Road Closure Information</a></li> <li><a href="https://ops.fhwa.dot.gov/travelinfo/index.htm">Real Time Traveler Information</a></li> <li><a href="security.cfm">Security</a></li> <li><a href="https://safety.fhwa.dot.gov/speedmgt/">Speed Management</a></li> <li><a href="https://ops.fhwa.dot.gov/tolling_pricing/index.htm">Tolling and Pricing Program</a></li> <li><a href="https://ops.fhwa.dot.gov/">Transportation Management</a></li> </ul> <h2><a href="roads.cfm">Roads and Bridges</a></h2> <ul> <li><a href="/asset/">Asset Management</a></li> <li><a href="/construction/">Construction and Project Management</a></li> <li><a href="/programadmin/consultant.cfm">Consultant Services</a></li> <li><a href="/context/">Context Sensitive Solutions</a></li> <li><a href="/design/">Design</a></li> <li><a href="https://ops.fhwa.dot.gov/opssecurity/index.htm">Emergency Response</a></li> <li><a href="https://ops.fhwa.dot.gov/freight/index.cfm">Freight/Goods Movement</a></li> <li><a href="/engineering/geotech/index.cfm">Geotechnical</a></li> <li><a href="/engineering/hydraulics/index.cfm">Hydraulics</a></li> <li><a href="https://safety.fhwa.dot.gov/intersection/">Intersections</a></li> <li><a href="/ipd/project_delivery/defined/major_project.htm">Major Projects</a></li> <li><a href="nhs.cfm">National Highway System</a></li> <li><a href="/trafficinfo/index.htm">National Traffic and Road Closure Information</a></li> <li><a href="https://ops.fhwa.dot.gov/program_areas/programareas.htm">Operations</a></li> <li><a href="/pavement/index.cfm">Pavement and Materials</a></li> <li><a href="/planning/">Planning</a></li> <li><a href="/real_estate/">Right-of-Way/Realty</a></li> <li><a href="security.cfm">Security</a></li> <li><a href="/bridge/">Structures</a></li> <li><a href="/tpm/">Transportation Performance Management</a></li> <li><a href="https://ops.fhwa.dot.gov/wz/index.asp">Work Zones</a></li> </ul> <h2><a href="people.cfm">Road Users</a></h2> <ul> <li><a href="bikeped.cfm">Bicyclists and Pedestrians</a></li> <li><a href="/civilrights/index.htm">Civil Rights</a></li> <li><a href="/motorcycles/">Motorcycles</a></li> <li><a href="/ohim/nptspage.htm">National Household Travel Survey</a></li> <li><a href="https://safety.fhwa.dot.gov/saferoutes/">Safe Routes to School</a></li> </ul> <h2><a href="safety.cfm">Safety</a></h2> <ul> <li><a href="/construction/safety.cfm">Construction Safety</a></li> <li><a href="https://safety.fhwa.dot.gov/tools/data_tools/">Data and Analysis Tools</a></li> <li><a href="https://safety.fhwa.dot.gov/xings/">Highway-Railroad Grade Crossing</a></li> <li><a href="https://safety.fhwa.dot.gov/hsip/">Highway Safety Improvement Program (HSIP) / Strategic Highway Safety Plan (SHSP)</a></li> <li><a href="https://safety.fhwa.dot.gov/safetealu/memos/memo051906.cfm">High Risk Rural Roads Program</a></li> <li><a href="https://safety.fhwa.dot.gov/intersection/">Intersection Safety</a></li> <li><a href="https://safety.fhwa.dot.gov/local_rural/">Local & Rural Road Safety</a></li> <li><a href="https://safety.fhwa.dot.gov/rsat/">Motorcoach Roadway Safety Assessment Tool (RSAT)</a></li> <li><a href="https://safety.fhwa.dot.gov/motorcycles/">Motorcycle Safety</a></li> <li><a href="https://safety.fhwa.dot.gov/roadway_dept/policy_guide/road_hardware/">NCHRP Report 350 - Roadside Hardware</a></li> <li><a href="https://safety.fhwa.dot.gov/older_users/">Older Road User</a></li> <li><a href="https://safety.fhwa.dot.gov/ped_bike/">Pedestrian & Bicycle Safety</a></li> <li><a href="https://safety.fhwa.dot.gov/road_diets/">Road Diets</a></li> <li><a href="https://safety.fhwa.dot.gov/rsa/">Road Safety Audits</a></li> <li><a href="https://safety.fhwa.dot.gov/roadway_dept/">Roadway Departure Safety</a></li> <li><a href="https://safety.fhwa.dot.gov/roadway_dept/pavement/#rumble">Rumble Strips Community of Practice</a></li> <li><a href="https://safety.fhwa.dot.gov/saferoutes/">Safe Routes to School</a></li> <li><a href="https://safety.fhwa.dot.gov/ssp/">Safety Strategic Plan (SSP)</a></li> <li><a href="https://safety.fhwa.dot.gov/speedmgt/">Speed Management</a></li> <li><a href="https://safety.fhwa.dot.gov/intersection/redlight/outreach/">Stop Red Light Running Program</a></li> <li><a href="https://safety.fhwa.dot.gov/hsip/fivepercent/">Transparency Reports (5 Percent)</a></li> <li><a href="https://safety.fhwa.dot.gov/hsip/tsp/">Transportation Safety Planning (TSP)</a></li> <li><a href="https://safety.fhwa.dot.gov/roadway_dept/night_visib/">Visibility and Retroreflectivity</a></li> <li><a href="https://ops.fhwa.dot.gov/wz/index.asp">Work Zone Management</a></li> </ul> <p> </p> </div>   <p class="txtright txtsmall noprint returntoplink"><a href="#top">Return to top</a></p>  <div id="pagedates" class="txtsmall"> Page last modified on May 4, 2023 </div> </div>   <div id="fhwafooter"> <div class="fhwacontainer"> <div class="fhwasign" title="U.S. Department of Transportation/Federal Highway Administration"></div> <div class="noprint"><a href="/privacy.cfm">Privacy Policy</a> | <a href="/foia/">Freedom of Information Act (FOIA)</a> | <a href="https://highways.dot.gov/section-508/our-commitment">Accessibility</a> | <a 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