Strategies to reduce risk at high-speed rail grade crossings range from eliminating crossings whenever possible to the use of advanced train control systems that provide constant warning time to motorists and use warning systems to assure crossings are clear of obstacles after gates or barriers are in place. These systems will monitor and communicate train locations and speeds and will stop the train if the crossing is not clear. Four quadrant gates (that block all highway lanes) reduce risk significantly with existing technology. Movable barriers will protect crossings that cannot be closed. A comprehensive risk-reduction strategy will be applied based on risk estimation models which consider actual traffic on highway as well as estimating the actual risks to both highway vehicle and train occupants.
There are a number of Demonstration Systems currently being developed or are under testing for instance:
Other innovative concepts are being sought for integrated demonstration and assessment for efficacy on revenue corridors through the National Academy of Sciences Innovations Deserving Exploratory Analysis (IDEA) Program and through broad agency announcements (BAA).
For more on demonstration systems, evaluation tools and evolving technologies, research and solutions such as the use of impenetrable barriers please see e-Library.