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Traffic Safety Manual

The Iowa DOT currently uses the 2003 Manual on Uniform Traffic Control Devices (MUTCD) except for exceptions noted in Iowa Admin. 761-130.1

Please direct questions related to the content of this manual to:
Office of Traffic and Safety at 515-239-1557 or Jeff Stratton at 515-239-1154
  
Chapter Table of contents Last updated

Chapter 1

1A General 1A-1 About This Manual

1/27/04

Chapter 2 - Signing

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 PlacementD

2A-9 Miscellaneous Requirements

2A-10 Typicals and Additional Figures

12/17/01

11/29/05

12/17/01





01/27/04

12/17/01

04/04/06

10/02/06

12/17/01

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

12/12/05

04/23/07

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

04/23/07

12/16/05

2D Guide Signs 2D-1 Conventional Roads

2D-2 Freeway and Expressway

09/2/09

04/23/07

2E Portable 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

Chapter 3 - Pavement Markings

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

1/27/04

11/07/06

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

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





4F Maintenance 4F-1 General

4F-2 Preventative Maintenance

4F-3 Responsive Maintenance

12/17/01





4G Removal 4G-1 Justification

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-1 General and Definitions



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

12/17/01

6E Freeways 6E-1 Bridge Lighting

12/17/01

Chapter 7 - Traffic Engineering Studies

7A No Passing Zones 7A-1 General

7A-2 Rope Method

7A-3 Distance Measuring Instrument Method

7A-4 Safety and Equipment

02/07/06

02/07/06

02/07/06

02/07/06

7B Curve Speed Study 7A-1 General

7A-2 Rope Method

7A-3 Distance Measuring Instrument Method

7A-4 Safety and Equipment

02/07/06

02/07/06

02/07/06

02/07/06

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

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

8A General



8B Traffic Control Standards Chapter Not Available - Standard Road Plans TC



8C Offsite Detours



Chapter 9 - Access

9A Access - General



9B Access - Frequently Asked Questions Chapter Not Available- For Related Information Click Here



9C Access - Policy



Chapter 10 - Utilities

10A Access - General



10B Frequently Asked Questions



10C Policy Chapter Not Available - For Related Information Click Here



10D Additional Figures



Chapter 11 - Advertising Management

11A General



11B Signing Programs Chapter Not Available - For Related Information Click Here



Chapter 12 - Crash Analysis Resources

12A General Visit Web site



12B Crash Mapping Tool (CMaT) Additional CMaT information



12C SAVER Additional SAVER information



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



Chapter 14 - SMS

14A General 14A General

12/17/01

Chapter 15 - Sign Shop

15A General



15A General Sign Catalog available(DOTNET Users Only)



15C How to Order Signs



Chapter 16 - Sample Plans

16A General

04/04/06

16B Signals

04/04/06

16C Signing Plans

04/04/06

16D Lighting Plans

04/04/06

Chapter 18A-1 At Stop Signs

18A Rumble Strips 18A-1 At Stop Signs

04/04/06