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TRB's National Cooperative Highway Research Program (NCHRP) Report 600C, Human Factors Guidelines for Road Systems, Collection C--including Chapters 16, 17, 18, 19, 20, 22 (Tutorials 4, 5, 6), 23 (Updated), 24, 25, 26 (Updated)--explores human factors principles and findings for consideration by highway designers and traffic engineers. The report is designed to help the nonexpert in human factors to consider more effectively the roadway user's capabilities and limitations in the design and operation of highway facilities.

NCHRP Report 600A

(Chapters 1 through 5, 10, 11, 13, 22 [Tutorials 1 and 2], 23, and 26); and

NCHRP Report 600B

(Chapters 6, 22 [Tutorial 3], and 23 [Updated]) are available online. Additional chapters, to be developed under NCHRP Project 17-41 according to the priorities established by the project panel, are expected in late 2010.

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Suggested Citation

Transportation Research Board. 2010. Human Factors Guidelines for Road Systems - Collection C: Chapters 16, 17, 18, 19, 20, 22 (Tutorials 4, 5, 6), 23 (Updated), 24, 25, 26 (Updated). Washington, DC: The National Academies Press. https://doi.org/10.17226/14396.

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Publication Info

111 pages |  8.5 x 11 |  DOI: https://doi.org/10.17226/14396
Chapters skim
Front Matter i-xii
Chapter 16 - Special Considerations for Rural Environments 1-1
Passing Lanes 2-3
Countermeasures for Pavement/Shoulder Drop-offs 4-5
Rumble Strips 6-7
Design Consistency in Rural Driving 8-9
Chapter 17 - Speed Perception, Speed Choice, and Speed Control 10-10
Behavioral Framework for Speeding 11-12
Speed Perception and Driving Speed 13-14
Effects of Roadway Factors on Speed 15-16
Effects of Posted Speed Limits on Speed Decisions 17-18
Speeding Countermeasures: Setting Appropriate Speed Limits 19-20
Speeding Countermeasures: Communicating Appropriate Speed Limits 21-22
Speeding Countermeasures: Using Roadway Design and Traffic Control Elements to Address Speeding Problems 23-24
Chapter 18 - Signing 25-25
General Principles for Sign Legends 26-27
Sign Design to Improve Legibility 28-29
Conspicuity of Diamond Warning Signs under Nighttime Conditions 30-31
Driver Comprehension of Signs 32-33
Complexity of Sign Information 34-35
Chapter 19 - Changeable Message Signs 36-36
When to Use Changeable Message Signs 37-38
Presentation to Maximize Visibility and Legibility 39-40
Determining Appropriate Message Length 41-42
Composing a Message to Maximize Comprehension 43-44
Displaying Messages with Dynamic Characteristics 45-46
Changeable Message Signs for Speed Reduction 47-48
Presentation of Bilingual Information 49-50
Chapter 20 - Markings 51-51
Visibility of Lane Markings 52-53
Effectiveness of Symbolic Markings 54-55
Markings for Pedestrian and Bicyclist Safety 56-57
Post-Mounted Delineators 58-59
Markings for Roundabouts 60-61
Chapter 22 - Tutorials 62-62
Tutorial 1: Real-World Driver Behavior Versus Design Models 63-64
Tutorial 4: Determining Appropriate Clearance Intervals 65-65
Tutorial 5: Determining Appropriate Sign Placement and Letter Height Requirements 66-69
Tutorial 6: Calculating Appropriate CMS Message Length under Varying Conditions 70-75
Chapter 23 - References 76-87
Chapter 24 - Glossary 88-93
Chapter 25 - Index 94-96
Chapter 26 - Abbreviations 97-98
Abbreviations used without definitions in TRB publications 99-99

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