This report describes research sponsored by the Texas Department of Transportation (TxDOT) to develop a decision-support tool to aid in evaluating key issues related to converting a high-occupancy vehicle (HOV) lane to a high-occupancy/toll (HOT) lane. The tool includes three broad categories of factors to consider, including facility considerations, performance considerations, and institutional considerations. Finally, the research incorporates simple trade-off tools to allow TxDOT and local entities to assemble all relevant factors into an analysis to aid decision makers in evaluating the available options. The analysis tool was developed in Visual Basic.Net®. the program is called the High-Occupancy/Toll STrategic Analysis Rating Tool (HOT START), and it is designed to be easily tailored to local needs. The report also provides an application of the tool to a hypothetical freeway.