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.

Chapter 1 - Introduction

Title Description Last updated
1A General 1/27/04

Chapter 2 - Signing

Title Description Last updated
2A General 11/05/15
11/05/15
11/05/15

11/05/15
11/05/15
12/17/01
5/08/13
10/02/06
11/05/15
2B Regulatory Signs 12/12/05
10/02/06
6/14/18
12/12/05
12/12/05
7/18/18
4/23/07
2C Warning Signs 7/18/18   
10/13/06
12/16/05
2D Guide Signs 4/23/07
7/18/18
2E Portable Changeable Message Signs 12/16/05
2F Permanent Changeable Message Signs 12/16/05
12/16/05
12/16/05
12/16/05
2G Scenic Byways Signs 5/17/11

Chapter 3 - Pavement Markings

Title Description Last updated
3A General 1/27/04
1/27/04
3B Pavement Markings Standards 5/02/13
4/26/13
3C Manual on Pavement Marking Programs 1/27/04
1/27/04
3D Pavement Markings Management Program    

Chapter 4 - Signals

Title Description Last updated
4A General 12/17/01
4B Installation Justification 12/17/01
4C Design
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
6/06/06
4E Operations
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 04/04/06

Chapter 6 - Lighting

Title Description Last updated
6A General
12/17/01
6B Rural Intersections 12/17/01
6C Interchanges 12/17/01
6D Freeways 12/17/01
6E Freeways 12/01/11

Chapter 7 - Traffic Engineering Studies

Title Description Last updated
7A No Passing Zones 05/07/13
02/07/06
2/07/06
2/07/06
7B Curve Speed 10/02/06
7C Curve Speed Study 7C-1 County Road
7C-2 Rural Primary
7C-3 Primary Highway Extension
 
7E Traffic Control Warrant Studies 7E-1 Traffic Signal Warrants
7E-2 Multiway Stop Warrants
 
7F-1 School Crossing Study 10/02/06
7G Sight Distance Studies 2/07/06
7/18/18 
10/02/06
7H Delay Studies 2/19/07
7I Traffic Volume 2/19/07
7J Signing and Pavement Marking Audits 7J-2 Pavement Marking Audits 2/07/06

Chapter 8 - Automated Traffic Enforcement

Title Description Last updated
8A Automated Traffic Enforcement 8A-1 Automated Traffic Enforcement
10/23/2018

Chapter 9 - Temporary Traffic Control

Title Description Last updated
9A General
 
9B Traffic Control Standards Chapter not available
Standard Road Plans TC
 
9C Offsite Detours    

Chapter 10 - Access

Title Description Last updated
10A Access - General
 
10B Access - Frequently Asked Questions Chapter not available
 

Chapter 11 - Advertising Management

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

Chapter 15 - Sign Shop

Title Description Last updated
15A General 10/23/2018
15C How to Order Signs    

Chapter 16 - Sample Plans

Title Description Last updated

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

  4/04/06