This project looks into utilizing sophisticated portable equipment to provide advanced traveler information at any location that requires it. Such portable ATIS features changeable message signs that can be fed with correct and useful information automatically and/or remotely. Portable ATIS should be complementary to the existing fixed ATIS infrastructure and become a fully integrated component of the existing system management toolbox. This means, in particular, that it should be controllable from a central transportation management center (TMC) to allow real-time updates based on the traffic situation system-wide. Moreover, a portable sensing equipment package may be deployed along with the signs to provide delay calculations or travel time estimates based on local factors. The project is designed to move toward deployment. The first part of the project will be to paint an accurate picture of the limitations faced by Caltrans practitioners by inventorying the hardware and software currently in use. In parallel, the team will review existing technology and best practices in the ITS industry. Next, the project team will produce a guiding document for practitioners and ITS vendors that outlines high level system requirements of the technical and operational needs of portable ATIS. The team will publish a Request for Information (RFI) asking vendors to describe how closely their product meets Caltrans’ requirements as defined in the guiding document. Lastly, the project team will evaluate pilot deployments. The evaluation will be kept simple and leverage feedback on whether the project’s objectives have been met, and how the selected portable system performs with respect to key metrics such as reliability and delay calculation accuracy.