Notification of future construction or event.Ī PCMS can provide a unique message that alerts the motorist and supports standard signing for:.Construction or maintenance (e.g., work zone).Is used to supplement other required signing.Ī PCMS can be used to alert and inform motorists during one of the following scenarios:. Relays information that is difficult to accomplish with static signing.A PCMS is housed on a trailer or on a truck bed and can be deployed quickly for meeting the temporary requirements frequently found in work zones or accident areas. The message is limited by the size of the sign (usually three lines with eight characters per line). This capability is achieved through elements on the face of the sign that can be activated to form letters or symbols. Standards that apply to the PCMS are found in the Manual on Uniform TrafficĪ PCMS is a traffic control device that is capable of displaying a variety of messages to inform motorists of unusual driving conditions. This handbook is not intended to be a standard. This handbook presents information on the PCMS and is intended to illustrate the principles of proper PCMS use. The purpose of this handbook is to present basic guidelines for the use of portable changeable message signs (PCMS). Portable Changeable Message Sign Handbook - PcmsįHWA Contact: Ken Opiela, HRDS-05, (202) 493-3371 TABLE OF CONTENTS
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