1.10 Highway Rail Intersection (User Service*)
The Highway Rail Intersection (HRI) user service uses ITS technologies to provide improved control of highway and train traffic to avoid or decrease the severity of collisions that occur between trains and vehicles at HRIs.
User Service Requirements*:
| 1.10.0 | ITS shall include a Highway-Rail Intersection (HRI) function to control highway and rail traffic in at-grade HRIs. Two sub-services are supported: Standard Speed Rail Subservice which is applicable to light rail transit, commuter rail and heavy rail trains with operational speeds up to 79 miles per hour (MPH); and High Speed Rail Subservice which is applicable to all passenger and freight trains with operational speeds from 80 to 125 MPH. |
| PSpecs*: 1.1.2.2 , 1.2.4.1 , 1.2.4.3 , 1.2.7.1 , 1.2.7.6 , 1.6.1.1 , 1.6.1.2.1 , 1.6.1.2.2 , 1.6.1.2.3 , 1.6.1.2.4 , 1.6.1.2.5 , 1.6.1.2.6 , 1.6.1.3 , 1.6.1.4.1 , 1.6.1.4.2 , 1.6.1.4.3 , 1.6.1.4.4 , 1.6.1.5 , 1.6.1.6.1 , 1.6.1.6.2 , 1.6.1.7.1 , 1.6.1.7.2 , 1.6.2.1 , 1.6.2.2 , 1.6.2.3 , 1.6.3.1 , 1.6.3.2 , 1.6.3.3 , 1.6.4.1 , 1.6.4.2 , 1.6.5.1 , 1.6.5.2 , 1.6.5.3 | |
| 1.10.1 | The Highway-Rail Intersection (HRI) function shall be applicable to operational, at-grade highway-rail intersections with train operational speeds up to 125 MPH. |
| PSpecs*: 1.2.4.3 , 1.6.1.1 , 1.6.1.2.1 , 1.6.1.4.1 , 1.6.1.6.1 , 1.6.3.1 , 1.6.3.2 , 1.6.3.3 | |
| 1.10.1.1 | HRI users shall include light rail transit and rapid rail transit approaching and crossing HRIs. |
| PSpecs*: 1.2.4.3 , 1.6.3.1 | |
| 1.10.1.2 | HRI users shall include commuter rail trains approaching and crossing HRIs. |
| PSpecs*: 1.6.3.1 , 1.6.3.3 | |
| 1.10.1.3 | HRI users shall include freight and intercity passenger trains approaching and crossing HRIs. |
| PSpecs*: 1.6.3.1 , 1.6.3.3 | |
| 1.10.1.4 | HRI users shall include highway vehicles approaching and crossing HRIs. |
| PSpecs*: 1.6.1.6.1 | |
| 1.10.1.5 | HRI users shall include motor vehicle operators, bicyclists and pedestrians approaching and crossing HRIs. |
| PSpecs*: 1.6.1.4.1 | |
| 1.10.1.6 | HRI users shall include train crews operating rail traffic while approaching and crossing HRIs. |
| PSpecs*: 1.6.3.1 , 1.6.3.2 | |
| 1.10.1.7 | HRI users shall include rail maintenance and inspection vehicles approaching and crossing HRIs. |
| PSpecs*: 1.6.1.1 , 1.6.1.2.1 , 1.6.3.1 | |
| 1.10.2 | HRI shall provide interfaces between highway and rail management functions. |
| PSpecs*: 1.6.1.1 , 1.6.1.4.2 , 1.6.2.1 , 1.6.2.2 , 1.6.2.3 , 1.6.3.1 , 1.6.4.1 , 1.6.4.2 , 1.6.5.1 , 1.6.5.3 | |
| 1.10.2.1 | HRI shall provide information management interfaces between highway and rail to coordinate traffic, demand and schedules. |
| PSpecs*: 1.6.1.1 , 1.6.2.1 , 1.6.4.1 , 1.6.4.2 , 1.6.5.3 | |
| 1.10.2.1.1 | HRI shall be capable of acquiring current train schedules from rail operations functions, and shall determine projected HRI closure times and duration. |
| PSpecs*: 1.6.1.1 | |
| 1.10.2.1.2 | HRI shall be capable of interacting with traffic management functions. |
| PSpecs*: 1.6.4.2 | |
| 1.10.2.1.3 | HRI shall provide closure data to traffic management for in-vehicle traveler advisory messages. |
| PSpecs*: 1.6.4.1 , 1.6.5.3 | |
| 1.10.2.2 | HRI shall provide the capability for interactive real-time interfaces. |
| PSpecs*: 1.6.1.4.2 , 1.6.2.2 , 1.6.2.3 , 1.6.3.1 , 1.6.4.2 , 1.6.5.1 | |
| 1.10.2.2.1 | HRI shall provide the capability to interface with rail operations functions for rail traffic control information. |
| PSpecs*: 1.6.2.2 , 1.6.5.1 | |
| 1.10.2.2.2 | HRI shall provide the capability to interface with traffic management functions for highway traffic coordination. |
| PSpecs*: 1.6.2.3 , 1.6.5.1 | |
| 1.10.2.2.3 | HRI shall provide the capability to interface with trains approaching and crossing the HRI for traffic coordination. |
| PSpecs*: 1.6.5.1 | |
| 1.10.2.2.4 | HRI shall provide the capability to interface with highway vehicles approaching and crossing HRIs for traffic control information. |
| PSpecs*: 1.6.1.4.2 , 1.6.4.2 | |
| 1.10.3 | At all HRIs with active railroad warning systems, HRI shall manage the traffic in the intersection. |
| PSpecs*: 1.2.4.1 , 1.2.7.1 , 1.2.7.6 , 1.6.1.1 , 1.6.1.2.1 , 1.6.1.2.2 , 1.6.1.3 , 1.6.1.4.3 , 1.6.1.5 , 1.6.1.6.2 , 1.6.1.7.1 , 1.6.3.3 , 1.6.5.2 | |
| 1.10.3.1 | HRI shall be capable of augmenting the intersection with standard highway traffic signal devices. |
| PSpecs*: 1.2.7.1 , 1.6.1.2.1 , 1.6.1.6.2 , 1.6.5.2 | |
| 1.10.3.2 | HRI shall include an automated collision avoidance function for highway vehicles approaching HRIs. |
| PSpecs*: 1.2.7.6 , 1.6.1.2.1 | |
| 1.10.3.3 | HRI shall provide an Intelligent Intersection Controller (IIC) function to manage highway and rail traffic in the intersection. |
| PSpecs*: 1.2.4.1 , 1.2.7.1 , 1.6.1.1 , 1.6.1.2.1 , 1.6.1.2.2 , 1.6.1.3 , 1.6.1.4.3 , 1.6.1.5 , 1.6.3.3 | |
| 1.10.3.3.1 | IIC shall control active highway traffic signal devices at HRIs to manage highway traffic. |
| PSpecs*: 1.6.1.2.1 | |
| 1.10.3.3.2 | IIC function shall control active railway warning devices, including flashing lights and physical barriers for highway and walkway lanes at HRIs. |
| PSpecs*: 1.2.7.1 , 1.6.1.2.2 | |
| 1.10.3.3.3 | IIC function shall provide an intersection surveillance system to derive the real-time status of traffic in the intersection. |
| PSpecs*: 1.2.7.1 , 1.6.1.1 , 1.6.1.5 | |
| 1.10.3.3.4 | IIC function shall report real-time HRI equipment status. |
| PSpecs*: 1.6.1.3 | |
| 1.10.3.3.5 | IIC function shall report real-time HRI traffic status as advisories or alerts. |
| PSpecs*: 1.2.4.1 , 1.6.1.4.3 , 1.6.3.3 | |
| 1.10.4 | HRI shall include a Standard Speed Rail (SSR) Subservice to manage highway and rail traffic at HRIs for rail lines with operational speeds less than 80 MPH. |
| PSpecs*: 1.2.7.1 , 1.6.1.2.3 , 1.6.1.2.5 , 1.6.1.2.6 , 1.6.1.7.2 | |
| 1.10.4.1 | SSR shall include active railroad warning systems at designated HRIs. |
| PSpecs*: 1.2.7.1 , 1.6.1.2.3 , 1.6.1.2.5 , 1.6.1.2.6 , 1.6.1.7.2 | |
| 1.10.4.2 | SSR shall include passive HRIs with non-active warning systems. |
| PSpecs*: 1.2.7.1 | |
| 1.10.4.2.1 | SSR shall augment passive warning signs with additional highway traffic control devices at passive HRIs. |
| PSpecs*: 1.2.7.1 | |
| 1.10.5 | HRI shall provide a High Speed Rail (HSR) Subservice for HRIs on rail lines with operational speeds between 80 and 125 MPH. |
| PSpecs*: 1.2.4.1 , 1.2.7.1 , 1.6.1.2.4 , 1.6.1.4.4 , 1.6.1.6.1 , 1.6.1.7.2 , 1.6.2.2 , 1.6.3.3 | |
| 1.10.5.1 | HSR shall include active roadside message devices to provide highway closure information at HSR HRIs. |
| PSpecs*: 1.2.7.1 , 1.6.1.2.4 | |
| 1.10.5.2 | HSR shall provide special safety features to enhance safety. |
| PSpecs*: 1.2.4.1 , 1.2.7.1 , 1.6.1.2.4 , 1.6.1.4.4 , 1.6.1.6.1 , 1.6.1.7.2 , 1.6.2.2 , 1.6.3.3 | |
| 1.10.5.2.1 | HSR shall close the HRI to highway traffic at a predetermined time (up to three minutes) before train arrival or when directed by train operations. |
| PSpecs*: 1.6.1.6.1 , 1.6.1.7.2 | |
| 1.10.5.2.2 | HSR shall include a positive barrier function (e.g. four quadrant gates) to close the intersection to highway traffic for rail lines operating at speeds over 110 MPH. |
| PSpecs*: 1.2.7.1 , 1.6.1.2.4 | |
| 1.10.5.2.3 | HSR HRIs shall verify the intersection's status as either "OPEN" or "BLOCKED" for rail traffic by an immobile obstacle. |
| PSpecs*: 1.6.3.3 | |
| 1.10.5.2.4 | HSR shall provide HRI status to rail operations functions as either a "PROCEED" or a "STOP" indication. |
| PSpecs*: 1.6.2.2 | |
| 1.10.5.2.5 | HSR shall provide HRI status to the train as either a "PROCEED" or a "STOP" indication. |
| PSpecs*: 1.6.3.3 | |
| 1.10.5.2.6 | HSR shall provide HRI status to highway vehicles as either a "STOP FOR TRAIN" or a "PROCEED" indication. |
| PSpecs*: 1.2.4.1 , 1.6.1.4.4 | |
| 1.10.6 | At HRIs with active railroad warning systems, HRI shall provide the capability for automatic collision notification to rail operations and traffic management. |
| PSpecs*: 1.6.1.5 |
