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It explains guidance-focused principles for roadway cross-sections and multiple road types, including local roads, collectors, rural/urban arterials, and freeways. Core coverage includes traveled way, vertical and horizontal alignment, cross-section elements, and the role of standards such as AASHTO’s “Green Book” in addressing safety, efficiency, cost, drainage, environmental sensitivity, and operational trade-offs.",{"@graph":69,"@context":121},[70,84,104],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/roadway-geometric-design-ii-cross-sections-and-road-types/649469/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":98,"encodingFormat":97,"isAccessibleForFree":99,"interactionStatistic":100},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/roadway-geometric-design-ii-cross-sections-and-road-types/649469.png","ImageObject",300,407,{"name":92,"@type":93},"OmBimo","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-24",true,{"@type":101,"interactionType":102,"userInteractionCount":8},"InteractionCounter",{"@type":103},"ViewAction",{"@type":105,"mainEntity":106},"FAQPage",[107,113,117],{"name":108,"@type":109,"acceptedAnswer":110},"What is the course purpose and who is it intended for?","Question",{"text":111,"@type":112},"The course aims to familiarize engineers and designers with general guidelines and deeper principles for selecting and designing roadway cross-sections and road types.","Answer",{"name":114,"@type":109,"acceptedAnswer":115},"Which standards are primarily used for the course’s geometric design principles?",{"text":116,"@type":112},"AASHTO’s A Policy on Geometric Design of Highways and Streets, known as the “Green Book,” is used primarily for fundamental geometric design principles.",{"name":118,"@type":109,"acceptedAnswer":119},"How does the document describe the concept of a roadway’s traveled way?",{"text":120,"@type":112},"AASHTO defines traveled way as the portion of the roadway for vehicle movement, excluding shoulders and bicycle lanes.","https://schema.org",{"og:url":83,"og:type":123,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":125,"canonical":83},"index,follow",{"doc_id":127,"site_id":62},649469,1792855193,{"code":4,"msg":5,"data":130},{"doc_id":127,"user_id":131,"nickname":92,"user_avatar":132,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":133,"file_id":134,"file_url":135,"file_type":136,"file_size":137,"view_count":8,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":138,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144},962090893581,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","| |\n| --- |\n| Roadway Geometric Design II: CrossSections and Road Types\u003Cbr>Course No: C06-017\u003Cbr>Credit: 6 PDH |\n| |\n| Gregory J. Taylor, P.E. |\n| \u003Cbr>\u003Cbr>Continuing Education and Development, Inc.\u003Cbr>P: (877) 322-5800\u003Cbr>[info@cedengineering.com](info@cedengineering.com) |\n| [www.cedengineering.com](www.cedengineering.com) |\n\nGeometric Design II: Cross-Sections and Road Types – C06-017  \nINTRODUCTION  \nThis course is the second in a series of three volumes that summarizes and highlights the geometric design process for modern roads and highways. Subjects covered include: crosssection elements (lane widths, shoulders, roadside design, medians, drainage channels); local roads; collector roads; rural and urban arterials; and freeways. The contents of this document are intended to serve as guidance and not as an absolute standard or rule.  \nWhen you complete this course, you should be familiar with the general guidelines for roadway cross-sections and different road types. The course objective is to give engineers and designers an in-depth look at the principles to be considered when selecting and designing roads.  \nThe American Association of State Highway and Transportation Officials (AASHTO) publishes and approves information on geometric roadway design for use by individual state transportation agencies. The majority of today’s geometric design research is sponsored and directed by AASHTO and the Federal Highway Administration (FHWA) through the National Cooperative Highway Research Program (NCHRP) .  \nFor this course, AASHTO’s A Policy on Geometric Design of Highways and Streets (also known as the “Green Book”) will be used primarily for fundamental geometric design principles. This text is considered to be the primary guidance for U.S. roadway geometric design.  \nThis document is intended to explain some principles of good roadway design and show the potential trade-offs that the designer may have to face in a variety of situations, including cost of construction, maintenance requirements, compatibility with adjacent land uses, operational and safety impacts, environmental sensitivity, and compatibility with infrastructure needs.  \nThe practice of geometric design will always be a dynamic process with a multitude of considerations: driver age and abilities; vehicle fleet variety and types; construction costs; maintenance requirements; environmental sensitivity; land use; aesthetics; and most importantly, societal values. Despite this dynamic character, the primary objective of good design will remain as it has always been – to provide a safe, efficient and cost-effective roadway that addresses conflicting needs or concerns.  \n© Gregory J. Taylor, 2023 1  \nGeometric Design II: Cross-Sections and Road Types – C06-017  \nROADWAY CROSS-SECTIONS  \nRoadway geometric design consists of the following fundamental three-dimensional features:  \nVertical alignment-grades and vertical curves (“profile”)  \nHorizontal alignment-tangents and horizontal curves (“centerline”)  \nCross section-lanes, shoulders, curbs, medians, slopes, ditches, and sidewalks  \nCombined, these elements contribute to the roadway’s operational quality and safety by striving to provide a smooth-flowing, crash-free facility.  \nRoadway geometric design is a dynamic process with a multitude of considerations, such as driver age and abilities; vehicle fleet variety and types; construction costs; maintenance requirements; environmental sensitivity; land use; aesthetics; and most importantly societal values.  \nEngineers must understand how all of the roadway elements contribute to overall safety and operation. Applying design standards and criteria to ‘solve’ a problem is not enough. The fundamental objective of good geometric design will remain as it has always been – to produce a roadway that is safe, efficient, reasonably economic and sensitive to conflicting concerns.  \nTRAVELED WAY  \nAASHTO defines the roadway’s traveled way as “the portion of the roadway for the mov","cbCailCIpRBxMyOi","https://ap.wps.com/l/cbCailCIpRBxMyOi","pdf",2801040,53,"English","# INTRODUCTION\n# ROADWAY CROSS-SECTIONS\n## TRAVELED WAY\n## Surface Type Criteria\n## Cross Slope","[{\"question\":\"What is the course purpose and who is it intended for?\",\"answer\":\"The course aims to familiarize engineers and designers with general guidelines and deeper principles for selecting and designing roadway cross-sections and road types.\"},{\"question\":\"Which standards are primarily used for the course’s geometric design principles?\",\"answer\":\"AASHTO’s A Policy on Geometric Design of Highways and Streets, known as the “Green Book,” is used primarily for fundamental geometric design principles.\"},{\"question\":\"How does the document describe the concept of a roadway’s traveled way?\",\"answer\":\"AASHTO defines traveled way as the portion of the roadway for vehicle movement, excluding shoulders and bicycle lanes.\"}]","Roadway Geometric Design II - Cross-Sections and Road Types | PDF",1792800390,134]