Resources
Portable Changeable Message Boards—Insights, Applications, Performance.
Focused knowledge, reliable practices, and information designed for traffic safety professionals.
Message Boards
Operation. Planning. Use.
Considerations that influence PCMS management, deployment, power, and operational efficiency across different applications.
Articles
Operating Lead-Acid or LiFePO₄ Batteries in Winter Under Overcast Conditions
Introduction Multi-day overcast conditions in winter present one of the...
What Message Boards Reliably Recharge in Winter Conditions
Purpose of Analysis This report compares Portable Changeable Message Sign...
Why PCMS Units Die Overnight
A DOT reviewer, a contractor, or a procurement officer needs to understand why...
Why Allowing a PCMS Slightly Canted Actually Costs You
Whether your message boards use a flat‑mounted solar deck or an Spyder...
Why Get Rid of Sandbags?
PCMS units often rely on sandbags for wind stability—sometimes 300–400 pounds...
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