Office of Traffic Safety Program

California Department of Transportation
Caltrans > Business > Traffic Operations > Office of Traffic Safety Program > Traffic Safety Devices Branch

Office of Traffic Safety Program - Traffic Safety Devices Branch

Branch Chief: Randy Hiatt 916-654-2465

TRAFFIC MANUAL
CHAPTER 7
TRAFFIC SAFETY SYSTEMS

TABLE OF CONTENTS

Topic No.

Subject

Page No.

Date

7-01
7-01.1
7-01.2
7-01.3
7-01.4

GENERAL INFORMATION AND STANDARDS
Introduction
Roles and Responsibilities
Traffic Safety Systems Standards
Traffic Safety Systems Designs and National
Traffic Safety Systems Crash Testing Guidelines

7-6
7-6
7-6
7-6
7-7


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7-02
7-02.1
7-02.2
7-02.3
7-02.4

CLEAR RECOVERY ZONE CONCEPT
Introduction
Remove/Relocate the Fixed Object
Make the Fixed Object Breakaway
Shield the Fixed Object

7-11
7-11
7-11
7-11
7-12


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7-03
7-03.1
7-03.2
7-03.3
7-03.4
7-03.5
7-03.6

GUARDRAIL
Introduction
Guardrail Types
Guardrail Installation Criteria
Guardrail at Embankment Slopes
Guardrail at Fixed Objects
Guardrail Design Considerations

7-13
7-13
7-13
7-14
7-14
7-17
7-17


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7-04
7-04.1
7-04.2
7-04.3
7-04.4
7-04.5
7-04.6
7-04.7
7-04.8
7-04.9
7-04.10

MEDIAN BARRIER
Purpose
Function
Barrier Types
Study Warrants
Criteria for Choice of Type
Barrier Design Details
Median Design Considerations
CHP Enforcement Areas / Emergency Passageways
Glare Screens
Delineation

7-35
7-35
7-35
7-35
7-35
7-37
7-39
7-40
7-47
7-47
7-48


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7-05
7-05.1
7-05.2

OUTER SEPARATION BARRIER
Purpose
Outer Separation Barrier Criteria

7-48
7-48
7-48


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01-05-2012

7-06
7-06.1
7-06.2
7-06.3
7-06.4

CRASH CUSHIONS
Purpose
Available Crash Cushion Types
Placement
Temporary Crash Cushions

7-48
7-48
7-48
7-49
7-49


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APPENDIX
Exception to Traffic Safety System Standards

7-51
7-51


01-05-2012

LIST OF FIGURES

Figure No.

Title

Page No.

Date

7-1

Equal Severity Curve

7-15

01-05-2012

7-2

Railing at Fixed Objects or Embankment Installations

7-16

01-05-2012

7-3

 Railing at Structures

7-19

01-05-2012

7-4

 Position of Guardrail at Fixed Objects

7-20

01-05-2012

7-5a

 Guardrail Connections to Bridge Curbs

7-21

01-05-2012

7-5b

 Guardrail Connections to Anchor Posts

7-22

01-05-2012

7-6

 Modified Guardrail Installation with Type A Dike or 6-inch Curb

7-28

01-05-2012

7-7

Guardrail on Standard and Narrow Embankments

7-29

01-05-2012

7-8

Guardrail Concrete Beam on Narrow Embankments

7-30

01-05-2012

7-9

Long Span Nested Guardrail

7-31

01-05-2012

7-10

Special Post Footing Detail

7-32

01-05-2012

7-11a

Adjustable Height Guardrail (2-Hole Post)

7-33

01-05-2012

7-11b

Adjustable Height Guardrail (3-Hole Post)

7-34

01-05-2012

7-12

Freeway Median Barrier Study Warrant

7-36

01-05-2012

7-13

Washington State Cable Median Barrier

7-41

01-05-2012

7-14

Washington State Cable Median Barrier Terminal

7-42

01-05-2012

7-15

Washington State Cable Median Barrier Terminal Details

7-43

01-05-2012

7-16

 Thrie Beam Barrier Rub Rail Detail

7-45

01-05-2012

7-17

 Thrie Beam Connection to Bridge Curbs

7-46

01-05-2012

7-18

Sand Barrel Arrays

7-50

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LIST OF TABLES

Table No.

Title

Page No.

Date

7-1

Standards Requiring Headquarters Approval for Exceptions

7-9

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7-2

Standards Requiring District Approval for Exceptions

7-9

01-05-2012

7-3

Procedural Standards

7-10

01-05-2012

7-4

Railing and Barrier Restoration Practice

7-25

01-05-2012

7-5

Median Barrier Type Selection Table

7-38

01-05-2012


Last Updated: Wednesday, February 15, 2012 10:53 AM