摘要: |
Improving safety and mobility at highway-rail grade crossings is the heart of this research project report. The study is based on the 1997 ITS Joint Program Office study that identified projects in the United States using intelligent transportation systems technology at highway-rail grade crossings. The 1997 study identified seven projects that tested the following five functions: in-vehicle warning, second train warning, crossing blockage, traveler information and traffic management, four quadrant gates with automatic train stop, and a comprehensive set of technologies called Intelligent Grade-Crossing. The following year, the ITS Joint Program Office commissioned another cross-cutting study to examine the commonalities and differences among the seven projects. This repot documents the findings of that cross-cutting study. It concludes with a discussion of issues and evaluation results common to all seven projects, and emerging trend in the field. The report provides references, Internet resources and contacts for each project. Evaluation results from the seven projects indicate that ITS technologies have a positive impact in increasing safety and mobility at highway=rail grade crossings. |