Office of Operations
21st Century Operations Using 21st Century Technologies

Sharing Work Zone Effective Practices for Design-Build Projects

List of Abbreviations and Symbols

AADT—Annual Average Daily Traffic

AASHTO—American Association of State Highway and Transportation Officials

ADA—Americans with Disabilities Act

AFAD—Automated Flagger Assistance Devices

ATC—Alternative Technical Concepts

CCTV—Closed-Circuit Television

CMS—Changeable Message Signs

DQCS—Design Quality Control System

EMS—Emergency Medical Services

FHWA—Federal Highway Administration

HAR—Highway Advisory Radio

HOT—High Occupancy Toll

HOV—High Occupancy Vehicle

ITS—Intelligent Transportation Systems

MOT—Maintenance of Traffic

MOU—Memorandum of Understanding

MSDS—Material Safety Data Sheets

MUTCD—Manual on Uniform Traffic Control Devices

M&O—Maintenance and Operations

NEPA—National Environmental Policy Act

NTP—Notice to Proceed

OSHA—Occupational Safety and Health Administration

PCMS—Portable Changeable Message Signs

PIAC—Project Implementation Advisory Council

PI&O—Public Information and Outreach

PPE—Personal Protective Equipment

PS&E—Plans, Specifications, and Estimates

QA—Quality Assurance

QC—Quality Control

QSM—Quality System Manual

RFC—Release for Construction

RFI—Request for Information

RFP—Request for Proposals

RFQ—Request for Qualifications

ROPS—Rollover Protective Structures

SOQ—Statement of Qualifications

TCP—Traffic Control Plan

TIM—Traffic Incident Management

TMC—Transportation Management Centers

TMP—Transportation Management Plan

TO—Transportation Operations

TTC—Temporary Traffic Control

VSL—Variable Speed Limit

WTS—Worksite Traffic Supervisor

Office of Operations