Research Supporting the Development of Guidelines for Implementing Managed Lanes

TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 224: Research Supporting the Development of Guidelines for Implementing Managed Lanes documents the contractor's final report used to develop NCHRP Report 835: Guidelines for Implementing Managed Lanes. The report includes detailed background material, gap analysis, design elements, safety performance parameters, and additional related information that emerged through the case studies.