LOW VOLUME HIGHWAY-RAIL GRADE CROSSING TREATMENTS FOR THE OREGON HIGH SPEED RAIL CORRIDOR

This study defines how to gather information and how to obtain the communication and response necessary for safety at highway-rail crossings. It examines technologies for low-cost, high-safety treatments for low volume (less than 200 ADT) highway crossings of higher speed [130-200 kph (80-125 mph)] rail. A full crossing closure and consolidation process for the corridor is a necessary first step. Current train control and crossing safety systems are also examined. Intelligent Transportation System (ITS) technologies are evaluated to determine applicability in information gathering, communicating, and control functions of grade crossing safety. This study also presents guidelines for low volume crossings of the higher speed rail line in Oregon. Finally, a preliminary cost-benefit analysis is presented. Above 200 kph (125 mph), a crossing closure or grade separation is required. In the range of 130-200 kph (80-125 mph), ITS technologies have the potential to enhance crossing safety at a much lower cost than grade separation. Advanced systems can provide train location and speed information needed for sophisticated crossing control. A traffic management center can receive train and crossing information, operate crossing systems, and grant clearance for train or highway users through the crossing. Remote lock gates provide safety at private crossings. Increased traveler information and four quadrant warning gates increase motorist compliance at public crossings. At train speeds above 175 kph (110 mph), barrier gates protect rail movements. Video monitoring and detection systems provide reliable, but redundant information should a vehicle become trapped in a crossing.