Toolbox for Work Zone Barriers


Useful Links

-- Documents --

Caltrans Construction Manual

Caltrans Engineering Services Site

Caltrans Maintenance Manual

Caltrans Office Engineer Standard Plans

CTP - California Transporation Plan

Highway Design Manual

Log of Bridges on State Highways

Manuals and Guidance (list) for Division of Design

MUTCD (Manual on Uniform Traffic Control Devices)

MUTCD California Supplement (Manual on Uniform Traffic Control Devices)

NCHRP Report 500 Volume 17: A Guide for Reducing Work Zone Collisions

NCHRP Synthesis 215: Determination of Contract Time for Highway Construction Projects

Products Approved: Caltrans

Products Approved: NCHRP 350: -- Home

Products Approved: NCHRP 350: Barrier Terminals and Crash Cushions

Products Approved: NCHRP 350: Breakaway Hardware

Products Approved: NCHRP 350: Bridge Railings

Products Approved: NCHRP 350: Longitudinal Barriers

Products Approved: NCHRP 350: Work Zone Devices

Project Development Procedures Manual

Project Development Workflow Tasks

Transportation Management Plan Guidelines


California Highways (

CPR California Performance Review

CTC California Transportation Commission

CTF California Transportation Foundation

Department of Finance

Department of General Services

Legislative Analyst's Office

Office of Fleet Administration

State Contracts Register


-- Home Page

-- Site Index

Address Book

Caltrans Journal

Engineering Services Referral Listing

Equipment Catalog

Highway Worker Safety

In Memorium

Map of California State Highways

Realtime Freeway Speed Map

Safety Program - Safety Links

Safety Program - Safety Manual

SHSP - Caltrans Strategic Highway Safety Implementation Plan

SHSP - Strategic Highway Safety Plan - AASHTO Implementation Guides

Caltrans Districts

01: Del Norte, Humboldt, Lake, Mendocino

02: Lassen, Modoc, Plumas, Shasta, Siskiyou, Tehama, Trinity

03: Butte, Colusa, El Dorado, Glenn, Nevada, Placer, Sacramento, Sierra, Sutter, Yolo, Yuba

04: Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, Sonoma

05: Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz

06: Fresno, Kern, Kings, Madera, Tulare

07: Los Angeles, Ventura

08: Riverside, San Bernardino

09: Inyo, Mono

10: Alpine, Amador, Calaveras, Mariposa, Merced, San Joaquin, Stanislaus, Tuolumne

11: Imperial, San Diego

12: Orange

Caltrans HQ

Division of Equipment

Division of Maintenance

Division of Research and Innovation

Division of Traffic Operations

Division of Transportation Planning

Division of Transportation System Information

Office Engineer

Office of Traffic Safety

Organization chart

Postal Addresses

Telephone Directory

Caltrans Transportation Management Planning

Caltrans Deputy Directive 60 - Transportation Management Plans

Delay Calculation Sample

Lane Closure Chart information (Part of training course)

Lane Closure Holiday Restrictions table

Lane Requirement Chart Sample

TMP Example: TMP for I-5/I-805 Widening Project

Transportation Management Plan Guidelines (May 2004)

Transportation Management Planning at Caltrans


California Highway Patrol Home Page

CHP Traffic Incident Information Page


Federal Motor Carrier Safety Administration

FHWA -- Federal Highway Administration Home Page

FHWA Bureau of Transportation Statistics

FHWA Federal Highway Administration - Home

FHWA Federal Highway Administration California

FHWA Highways for LIFE

FHWA ITS in Work Zones

FHWA Safety

FHWA Transportation and Highway Related Web Sites

FHWA Web Sites

FHWA Work Zone

FHWA Work Zone Facts and Statistics

FHWA Work Zone Mobility and Safety Program Best Practices Guide

NCSA Fatality Analysis Reporting System

NHTSA National Highway Traffic Safety Administration: National Center for Statistics and Analysis

USDOT -- U.S. Department of Transportation

USDOT Bureau of Transportation Statistics

USDOT ITS Joint Program Office

USDOT ITS Lessons Learned

USDOT ITS Technology Overview

USDOT National Transportation Library

USDOT RITA - Research and Innovative Technology Administration

USDOT TRIS National Transportation Library



VacAll Industries

Institutes, Universities

Texas Transportation Institute

Transportation Research Board

U of Minnesota Center for Transportation Studies


Library of Congress

MIT OpenCourseWare


Advanced Highway Maintenance and Construction Technology Research Center at UC Davis

State DOTs

Illinois Bureau of Design and Environment Manual, 2002 Edition

Illinois Department of Transportation

Maryland Department of Transportation

Missouri Department of Transportation

New York State Department of Transportation

VDOT Transportation Research Council

Virginia Department of Transportation

Virginia DOT Work Area Protection Manual and many other publications

Washington State Department of Transportation

Washington State DOT Engineering Publications, including Design Manual, Standard Plans, and Standard

Work Area Protection Guide, Illinois DOT, Bureau of Operations, 1997

WS DOT Accountability

WS DOT Technology Transfer Center

WZ Safety Information Clearing House


Georgia Maintenance Research



State and Local Government on the Net

Virginia Transportation Research Council


WSDOT Accountability


WSDOT Publications - Folio's

UC Davis

Home Page

Institute of Transportation Studies


Freeway Performance Measurement System (PeMs)

Texas Transportation Institute

Work Zones

National Work Zone Safety Awareness Week cosponsored by the FHWA and AASHTO

National Work Zone Safety Information Clearinghouse





The purpose of this site is to help plan Work Zones.

The basic idea is to present basic information about barriers and attentuators in a format that will allow quick comparisons in support of Work Zone planning. The primary sources of the information presented here are NCHRP 350 approval letters. The next steps in developing these pages are to improve the information presented and to review the presentation format. This will require practitioner input.

This site is hosted by AHMCT at UC Davis. The content of these pages reflects work in progress. Please send comments to ahmctWeb (at)