Products
CMS-T331 Full-Size Portable Message Sign
Industry Applications
The CMS-T331 is ideal for DOT and contractor deployments on freeways and high-speed roadways including lane closures, shoulder work, median applications, and long-term construction projects. It is designed to maintain visibility and message clarity in demanding work zone environments.
Product Overview
The CMS-T331 is part of AMSIG’s T300 Series of full-size portable message signs, built on a common platform to support consistent operation and cost-effective ownership. The display automatically adjusts LED intensity based on ambient light to maintain superior visibility day and night.
With onboard memory for pre-programmed and user-generated messages plus multi-page sequences, the T331 gives operators flexibility to adapt messaging as conditions change. NTCIP compliance supports integration into existing ITS programs and remote management workflows.
Technical Specifications
The CMS-T331 is engineered for DOT work zones where reliability, long-range legibility, and consistent operation matter. Detailed technical specifications are provided in the downloadable Technical Specifications resource.
- 3 Lines x 8 Characters
- 18-inch Character Height
- 2 Font Sizes 4×7 and 5×7
- Minimum 30-day battery run time
- NTCIP compliant
- 1000+ ft legibility
- 4800 ft viewability
Long-Range Legibility
Photosensitive circuit regulates LED intensity based on ambient illumination for consistent day and night visibility.
Automatic Brightness Control
Photosensitive circuit regulates LED intensity based on ambient illumination for consistent day and night visibility.
Extended Deployment Runtime
Minimum 30-day battery run time supports long-term deployments and reduces service needs.
ITS Integration Ready
NTCIP compliance supports centralized control and integration into existing ITS programs.
Firmware / Controllers
The CMS-T331 operates on AMSIG’s WebbExpress firmware, delivering ease of use, reliability, and NTCIP compatibility. WebbExpress supports long-term serviceability, including over-the-air updates and upgrade paths that help extend the usable life of the sign.
AMSIG’s consistent firmware and architecture ensure that the CMS-T331 remains compatible with evolving operational and communication standards.
Security & Longetivity Messaging
Built on a common T300 Series platform designed for consistent operation, reduced maintenance, and dependable field performance in demanding DOT environments.
Need Help Choosing the Right Configuration?
Selecting the right portable message sign depends on your environment, message requirements, and deployment conditions. AMSIG’s team can help evaluate your needs and recomme nd the most effective configuration.
