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The Online
Traffic and Safety Manual

The Iowa DOT currently uses the 2003 Manual on Uniform Traffic Control Devices (MUTCD)

except for exceptions noted in Administrative Rule Chapter 761, Section 130.1.

Hyperlinks have been provided to the existing Sections of this Manual.

Please direct questions related to the content of this online manual to:

Office of Traffic and Safety @ 515-239-1557

or to the person who maintains this webpage -

Jeff Stratton @

phone: 515-239-1154

email: jeff.stratton@dot.iowa.gov

Jump to Chapter: 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18

Last Updated

TAS Manual Table of Contents Table of Contents

     Chapter 1 - Introduction
1A General  1A-1 About This Manual
1/27/04

     Chapter 2 - Signing
2A General 2A-1 Purpose of Signing
12/17/01
2A-2 Standards and Guidelines - MUTCD
11/29/05
2A-3 Types of Signs
12/17/01
2A-4 Sign Management Program   
2A-5 Sign Design   
2A-6 Installation Guidelines
01/27/04
2A-7 Sign Mounting Requirements
12/17/01
2A-8 Sign Placement
04/04/06
2A-9 Miscellaneous Requirements
10/02/06
2A-10 Typicals and Additional Figures
12/17/01
2B Regulatory Signs 2B-1General
12/12/05
2B-2 Stop and Yield Signs
10/02/06
2B-3 Speed Limits Signs
12/12/05 
2B-4 Alignment and Movement Signs
04/23/07
2B-5 Parking Signs
12/12/05
2B-6 Other Regulatory Signs
04/23/07 
2C Warning Signs 2C-1 Roadway Related Signs
04/23/07  
2C-2 Traffic Related Signs
04/23/07  
2C-3 Supplemental Plaques
12/16/05  
2D Guide Signs 2D-1 Conventional Roads
04/23/07  
2D-2 Freeway and Expressway 04/23/07  
2E Portable Changeable Message Signs 2E-1 Guidelines 
12/16/05  
2F Permanent Changeable Message  Signs 2F-1 General
12/16/05  
2F-2 Guidelines
12/16/05  
2F-3 Operating Fundamentals
12/16/05  
2F-4 Message Design
12/16/05  
     Chapter 3 - Pavement Markings
3A General 3A-1 Purpose of Pavement Markings
1/27/04
3A-2 General Requirements
01/27/04
3B Pavement Markings Standards 3B-1 Pavement Marking Standards
1/27/04
3B-2 Typical Pavement Marking Layouts
11/07/06
3C Manual on Pavement Marking Programs 3C-1 Application of Pavement Markings
1/27/04
3C-2 Traffic Control
1/27/04
3D Pavement Markings Management Program  
     Chapter 4 - Signals    
4A General 4A-1 General
12/17/01
4B Installation Justification 4B-1 Installation Justification
12/17/01
4C Design 4C-1 General
12/17/01
4C-2 Standards and Guidelines
4C-3 Plan Requirements
4C-4 Specifications and Special Provisions
4D Construction 4D-1 Shop Drawings and Catalog Cuts   
4D-2 Daily Inspections   
4D-3 Final Inspection   
4D-4 Turn On 06/06/06  
4E Operations 4E-1 General
12/17/01
4E-2 Timings   
4E-3 Phasing   
4E-4 Coordination   
4E-5 Flashing Operation   
4E-6 Pre-emption   
4F Maintenance 4F-1 General
12/17/01
4F-2 Preventative Maintenance   
4F-3 Responsive Maintenance   
4G Removal 4G-1 Justification   
4G-2 Procedure
     Chapter 5 - Speed Limits   
5A Process for Establishing Speed Limits 5A-1 Process for Establishing Speed Limits  
04/04/06
     Chapter 6 - Lighting   
6A General 6A-1 General and Definitions 
6A-2 Funding  
12/17/01
6B Rural Intersections 6B-1 Intersection Lighting Warrants  
12/17/01
6C Interchanges 6C-1 Interchange Lighting Warrants  
12/17/01
6D Freeways 6D-1 Freeway Lighting Warrants
12/17/01
6E Bridge 6E-1 Bridge Lighting
12/17/01
     Chapter 7 - Traffic Engineering Studies   
7A No Passing Zones 7A-1 General 02/07/06  
7A-2 Rope Method 02/07/06  
7A-3 Distance Measuring Instrument Method  02/07/06  
7A-4 Safety and Equipment  02/07/06  
7B Curve Speed Study 7B-1 Advisory Curve Speed  10/02/06  
7C Speed Zone Study 7C-1 County Road   
7C-2 Rural Primary   
7C-3 Primary Highway Extension   
7D Accident Study      
7E Traffic Control Warrant Studies 7E-1 Traffic Signal Warrants   
7E-2 Multiway Stop Warrants   
7F School Crossing Study 7F-1 School Crossing Study 10/02/06  
7G Sight Distance Studies 7G-1 Access Control 02/07/06  
7G-2 Intersection 02/07/06  
7G-3 School Bus Stop 10/02/06 
7H Delay Studies 7H-1 Intersection Delay Studiesl 02/19/07  
    
7I Traffic Volume 7I-1 Traffic Volume Studies 02/19/07  
    
7J Signing and Pavement Marking Audits 7J-1Signing Audits 02/07/06  
7J-2 Pavement Marking Audits   
     Chapter 8 - Temporary Traffic Control   
8A General   
8B Traffic Control Standards   Chapter Not Yet Available-Standard Road Plans TC
8C Offsite Detours   
     Chapter 9 - Access   
9A Access - General  
9B Access - Frequently Asked Questions Chapter Not Yet Available-For Related Information Click Here
9C Access - Policy  
     Chapter 10 - Utilities   
10A General  
10B Frequently Asked Questions  
10C Policy Chapter Not Yet Available-For Related Information Click Here
10D Additional Figures  
     Chapter 11 - Advertising Management
11A General  
11 B Signing Programs Chapter Not Yet Available-For Related Information Click Here
     Chapter 12 - Crash Analysis Resources
12A General Click Here to go to the Crash Analysis webpage
12B Access ALAS  
12C Intersection Magic  
12D SAVER Click Here for information related to SAVER
     Chapter 13 - Safety Program
13A General  
13B Traffic Engineering Assistance Program (TEAP) TEAP (Click here to go to Funding Guide) Look on Page 38 of the Funding Guide
13C Traffic Safety Improvement Program (TSIP/TSF) TSIP/TSF
13D Highway Safety Improvement Program (HSIP)  
13E Safety Studies  
13F Small city Sign Inventory and Replacement Program  
     Chapter 14 - SMS
14A General 14A General
12/17/01
     Chapter 15 - Sign Shop
15A General  
15B Catalog Sign Catalog available to DOTNET users only
15C How to Order Signs  
     Chapter 16 - Sample Plans
16A General  
16B Signals  
16C Signing Plans  
16D Lighting Plans  
     Chapter 17 - Incident Management
17A General  
17B Recurring Incidents  
17C Non-recurring Incidents  
17D Special Events  
17E Construction Projects  
     Chapter 18 - Miscellaneous
18A Rumble Strips 18A-1 At Stop Signs
04/04/06

This page is maintained by Jeff Stratton,  jeff.stratton@dot.iowa.gov
Last Updated: 11/28/06