LibraryThe Office of Traffic and Safety library has information related to construction, planning, design, engineering, research, and policy. This includes manuals, program brochure, research reports and other publications.
Traffic and Safety ManualThis Traffic and Safety Manual is published by the Office of Traffic and Safety. Unlike many other documents published by the Iowa Department of Transportation, this manual is only available online.
Standard Highway Signs bookThe book contains information about regulatory signs, warning signs, pavement markings, standard alphabets including illustrations. The Standard Highway Signs book is designed to be navigable from the Table of Contents. Opening the Table of Contents and clicking on any sign listed will open the appropriate document and page for viewing.
Standard Road PlansThe standard road plans contained in this manual (commonly referred to as the "Red Book") have been developed to show standardized design features, construction methods and approved materials to be used in design plans for interstate, primary and secondary road construction in the state of Iowa
Manual on Uniform Traffic Control Devices (MUTCD)Information within the MUTCD defines the standards used by road managers nationwide to install and maintain traffic control devices on all public streets, highways, bikeways, and private roads open to public traffic. The MUTCD is published by the Federal Highway Administration.
Guide to Iowa Outdoor Advertising Sign RegulationsThis guide will acquaint you with Iowa laws regulating outdoor advertising signs along the state's primary highways. It defines various types of outdoor signs and presents the general prohibitions and sign controls which apply to them.
Research reports and other publications
Access policyIowa Primary Road Access Management Policy. In developing an access plan for a commercial site, an important factor is determining the potential traffic to be generated by the site and the directional distribution of site-generated traffic on the major approach routes and proposed entrance serving the site.
Utility accommodationPolicy for Accommodating and Adjustment of Utilities on the Primary Road System.
Research ReportsIowa highway Research Board (IHRB) abstract or full reports are available for immediate download.