Office of Traffic and Safety

Traffic and Safety Manual

The Iowa DOT currently uses the 2009 Manual on Uniform Traffic Control Devices (MUTCD) except for exceptions noted in
761 IAC 130.1.

Call 515-239-1557 for questions related to the content of this manual.

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Chapter 1 - Introduction

Title Description Last updated
1A General 1A-1 About This Manual 1/27/04

 


Chapter 2 - Signing

Title Description Last updated
2A General 2A-1 Purpose of Signing
2A-2 Standards and Guidelines - MUTCD
2A-3 Types of Signs
2A-4 Sign Management Program
2A-5 Sign Design
2A-6 Installation Guidelines
2A-7 Sign Mounting Requirements
2A-8 Sign Placement
2A-9 Miscellaneous Requirements
2A-10 Typicals and Additional Figures
12/17/01
07/20/12
12/17/01


01/27/04
12/17/01
05/08/13
10/02/06
05/02/13
2B Regulatory Signs 2B-1General
2B-2 Stop and Yield Signs
2B-3 Speed Limits Signs
2B-4 Alignment and Movement Signs
2B-5 Parking Signs
2B-6 Other Regulatory Signs
12/12/05
10/02/06
01/10/11
12/12/05
12/12/05
04/23/07
2C Warning Signs 2C-1 Roadway Related Signs
2C-2 Traffic Related Signs
2C-3 Supplemental Plaques
4/23/07
10/13/06
12/16/05
2D Guide Signs 2D-1 Conventional Roads
2D-2 Freeway and Expressway
04/23/07
04/23/07
2E Portable Changeable Message Signs 2E-1 Guidelines for Portable CMS 12/16/05
2F Permanent Changeable Message Signs 2F-1 General
2F-2 Guidelines
2F-3 Operating Fundamentals
2F-4 Message Design
12/16/05
12/16/05
12/16/05
12/16/05
2G Scenic Byways Signs 2G-1 Iowa Byways Signage Policy 05/17/11

 

Chapter 3 - Pavement Markings

Title Description Last updated
3A General 3A-1 Purpose of Pavement Markings
3A-2 General Requirements
1/27/04
01/27/04
3B Pavement Markings Standards 3B-1 Pavement Marking Standards
3B-2 Typical Pavement Marking Layouts
05/02/13
04/26/13
3C Manual on Pavement Marking Programs 3C-1 Application of Pavement Markings
3C-2 Traffic Control
1/27/04
1/27/04
3D Pavement Markings Management Program    

 

Chapter 4 - Signals

Title Description Last updated
4A General 4A-1 General 12/17/01
4B Installation Justification 4B-1 Installation Justification 12/17/01
4C Design 4C-1 General
4C-2 Standards and Guidelines
4C-3 Plan Requirements
4C-4 Specifications and Special Provisions
12/17/01
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
4E-2 Timings
4E-3 Phasing
4E-4 Coordination
4E-5 Flashing Operation
4E-6 Pre-emption
12/17/01
4G Removal 4G-1 Justification
4G-2 Procedure
 

 

Chapter 5 - Speed Limits

Title Description Last updated
5A Process for Establishing Speed Limits 5A-1 Process for Establishing Speed Limits 04/04/06

 

Chapter 6 - Lighting

Title Description Last updated
6A General 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 Freeways 6E-1 Bridge Lighting 12/01/11

 

Chapter 7 - Traffic Engineering Studies

Title Description Last updated
7A No Passing Zones 7A-1 General
7A-2 Rope Method
7A-3 Distance Measuring Instrument Method
7A-4 Safety and Equipment
05/07/13
02/07/06
02/07/06
02/07/06
7B Curve Speed 7B-1 Curve Speed Study 10/02/06
7C Curve Speed 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-1 School Crossing Study 7F-1 School Crossing Study
10/02/06
7G Sight Distance Studies 7G-1 Access Control
7G-2 Intersection
7G-3 School Bus Stop
02/07/06
02/07/06
10/02/06
7H Delay Studies 7H-1 Intersection Delay Studies 02/19/07
7I Traffic Volume 7I-1 Traffic Volume Studies 02/19/07
7J Signing and Pavement Marking Audits 7J-1Signing Audits
7J-2 Pavement Marking Audits
02/07/06

 

Chapter 8 - Temporary Traffic Control

Title Description Last updated
8A General
 
8B Traffic Control Standards Chapter not available
Standard Road Plans TC
 
8C Offsite Detours    

 

Chapter 9 - Access

Title Description Last updated
9A Access - General
 
9B Access - Frequently Asked Questions Chapter not available
See related information
 
9C Access - Policy    

 

Chapter 10 - Utilities

Title Description Last updated
10A Access - General
 
10B Frequently Asked Questions    
10C Policy Chapter not available
Related information
 
10D Additional Figures    

 

Chapter 11 - Advertising Management

Title Description Last updated
11A General
 
11B Signing Programs Chapter not available
Related information
 

 

Chapter 12 - Crash Analysis Resources

Title Description Last updated
12A General Visit web site
 
12B Crash Mapping Tool (CMaT) Additional CMaT information
 
12C SAVER Additional SAVER information
 

 

Chapter 13 - Safety Program

Title Description Last updated
13A General
 
13B Traffic Engineering Assistance Program (TEAP) TEAP (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    

 

Chapter 14 - SMS

Title Description Last updated
14A General 14A General

12/17/01

 

Chapter 15 - Sign Shop

Title Description Last updated
15A General    
15A General Sign Catalog available (DOTNET users only)  
15C How to Order Signs    

 

Chapter 16 - Sample Plans

Title Description Last updated

16A General
16B Signals
16C Signing
16D Lighting Plans

  04/04/06

 

Chapter 18 - 18A-1 At Stop Signs

Title Description Last updated
18A Rumble Strips
18A-1 At Stop Signs
02/11/14