1.3 Route Guidance (User Service*)
The Route Guidance user service provides travelers with a suggested route to reach a specified destination, along with simple instructions on upcoming turns and other maneuvers. When fully deployed, route guidance systems will provide travelers of all modes with directions to their destinations based on real-time information about the transportation system, including traffic conditions, road closures, and the status and schedule of transit systems.
User Service Requirements*:
| 1.3.0 | ITS shall include a Route Guidance (RG) function. Route Guidance will provide travelers with directions to selected destinations. Four functions are provided, which are, (1) Provide Directions, (2) Static Mode, (3) Real-Time Mode, and (4) User Interface. |
| PSpecs*: 1.6.1.1 , 6.2.1 , 6.2.5 , 6.2.8 , 6.5.1 , 6.5.2 , 6.6.1 , 6.6.2.1 , 6.6.2.2 , 6.6.2.3 , 6.6.3 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.7.1.4 , 6.7.3.1 , 6.7.3.2 , 6.7.3.3 , 6.7.3.4 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 , 6.8.1.3 , 6.8.1.4 , 6.8.3.3 , 6.8.3.4 , 7.4.1.3 , 7.4.1.4 , 7.4.1.5 | |
| 1.3.1 | RG shall include the capability to Provide Directions to travelers. |
| PSpecs*: 1.6.1.1 , 6.2.1 , 6.2.5 , 6.2.8 , 6.5.1 , 6.5.2 , 6.6.1 , 6.6.2.1 , 6.6.2.2 , 6.6.2.3 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.1.1 | The Provide Directions function shall provide travelers with directions to their selected destination locations. |
| PSpecs*: 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.1.2 | The Provide Directions function shall issue directions to travelers based on information about current conditions of transportation systems. |
| PSpecs*: 1.6.1.1 , 6.2.1 , 6.2.5 , 6.2.8 , 6.5.1 , 6.5.2 , 6.6.1 , 6.6.2.1 , 6.6.2.2 , 6.6.2.3 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.1.2.1 | Current transportation system conditions upon which directions to travelers is based shall include, but not be limited to, the following: |
| PSpecs*: 1.6.1.1 , 6.2.1 , 6.2.5 , 6.2.8 , 6.5.1 , 6.5.2 , 6.6.2.1 , 6.6.2.2 , 6.6.2.3 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.1.2.1(a) | Current traffic conditions. |
| PSpecs*: 6.6.2.1 | |
| 1.3.1.2.1(b) | Status of transit systems. |
| PSpecs*: 6.2.8 , 6.6.2.1 , 6.6.4 | |
| 1.3.1.2.1(c) | Schedules of transit systems. |
| PSpecs*: 6.6.2.3 , 6.6.4 | |
| 1.3.1.2.1(d) | Events taking place that influence travel routes. |
| PSpecs*: 1.6.1.1 , 6.2.1 , 6.5.1 , 6.5.2 , 6.6.5 , 6.7.1.3 | |
| 1.3.1.2.1(d).1 | Street closures. |
| PSpecs*: 1.6.1.1 , 6.2.1 , 6.5.1 , 6.5.2 | |
| 1.3.1.2.1(d).2 | Pedestrian events. |
| PSpecs*: 6.2.1 , 6.5.1 , 6.5.2 , 6.6.5 , 6.7.1.3 | |
| 1.3.1.2.1(d).3 | No pedestrian zones. |
| PSpecs*: 6.2.1 , 6.5.1 , 6.5.2 , 6.6.5 , 6.7.1.3 | |
| 1.3.1.3 | The Provide Directions function shall issue traveler directions that are simple and easy to understand, providing turning instructions on which way to turn onto including, but not limited to, the following: |
| PSpecs*: 6.2.5 , 6.6.2.1 , 6.6.2.2 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.1.3(a) | Particular streets. |
| PSpecs*: 6.6.2.1 | |
| 1.3.1.3(b) | Roads. |
| PSpecs*: 6.6.2.1 | |
| 1.3.1.3(c) | Walkways. |
| PSpecs*: 6.6.5 | |
| 1.3.1.3(d) | Transit facilities. |
| PSpecs*: 6.6.5 | |
| 1.3.2 | RG shall include a Static Mode for issuing information to travelers. |
| PSpecs*: 6.2.5 , 6.2.8 , 6.6.1 , 6.6.2.1 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.7.1.4 , 6.7.3.4 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 , 6.8.1.3 , 6.8.1.4 | |
| 1.3.2.1 | Static Mode shall provide travelers with information that includes, but is not limited to, the following: |
| PSpecs*: 6.2.5 , 6.2.8 , 6.6.1 , 6.7.1.2 , 6.7.1.3 , 6.7.1.4 , 6.7.3.4 | |
| 1.3.2.1(a) | Mapping information about roadways. |
| PSpecs*: 6.2.8 , 6.7.3.4 | |
| 1.3.2.1(b) | Scheduling information about transit systems. |
| PSpecs*: 6.2.5 | |
| 1.3.2.2 | Static Mode infrastructure systems shall provide the capability to have two-way communications between the traveler and the infrastructure. |
| PSpecs*: 6.6.1 , 6.6.2.1 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.2.2.1 | The two-way communications shall provide the capability for the infrastructure to receive the traveler's desired destination. |
| PSpecs*: 6.6.2.1 | |
| 1.3.2.2.2 | The two-way communications shall provide the capability to provide directions back to the traveler that are based on the infrastructure's calculated routing. |
| PSpecs*: 6.6.1 | |
| 1.3.2.3 | The Real-Time Mode shall provide the capability for autonomous operation of mobile based systems. |
| PSpecs*: 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 , 6.8.1.3 , 6.8.1.4 | |
| 1.3.2.3.1 | Autonomous Mobile Based systems shall have the capability to operate independent of infrastructure. |
| PSpecs*: 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 , 6.8.1.3 , 6.8.1.4 | |
| 1.3.3 | RG shall include a Real-Time Mode for issuing information to travelers. |
| PSpecs*: 6.2.5 , 6.6.1 , 6.6.2.1 , 6.6.2.2 , 6.6.3 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.7.3.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 , 6.8.1.3 , 6.8.1.4 , 7.4.1.3 , 7.4.1.4 , 7.4.1.5 | |
| 1.3.3.1 | The Real-Time Mode shall utilize current travel condition information to provide performance that is enhanced over the Static Mode performance, to include, but not be limited to, the following: |
| PSpecs*: 6.2.5 , 6.6.1 , 6.6.2.1 , 6.6.2.2 , 6.6.3 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.7.3.3 | |
| 1.3.3.1(a) | Traffic conditions information. |
| PSpecs*: 6.6.3 | |
| 1.3.3.1(b) | Dynamic transit schedule information. |
| PSpecs*: 6.6.1 | |
| 1.3.3.2 | The Real-Time Mode shall include the capability to operate in either or both of the following two configurations: |
| PSpecs*: 6.2.5 , 6.6.2.1 , 6.6.2.2 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 , 7.4.1.3 , 7.4.1.4 , 7.4.1.5 | |
| 1.3.3.2(a) | Route selection processors located on the mobile unit. |
| PSpecs*: 6.6.2.1 | |
| 1.3.3.2(b) | Route selection processors installed in the transportation system infrastructure. |
| PSpecs*: 6.6.2.1 | |
| 1.3.3.2.1 | Real-Time Mode Mobile Based systems shall include the capability to receive infrastructure information and use it in determining routing. |
| PSpecs*: 6.2.5 , 6.6.2.1 , 6.6.2.2 , 6.6.4 , 6.6.5 , 7.4.1.3 , 7.4.1.4 , 7.4.1.5 | |
| 1.3.3.2.2 | If current real-time information is included in route determination, the system shall be denoted as an Infrastructure-based real-time system. |
| PSpecs*: 6.2.5 , 6.6.2.1 , 6.6.2.2 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.3.3 | The Real-Time Mode shall provide the capability for autonomous operation of mobile-based systems. |
| PSpecs*: 6.2.5 , 6.6.2.1 , 6.6.2.2 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 , 6.8.1.3 , 6.8.1.4 | |
| 1.3.4 | RG shall include a User Interface function. |
| PSpecs*: 6.2.5 , 6.6.1 , 6.6.2.1 , 6.6.2.2 , 6.6.3 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.7.3.1 , 6.7.3.2 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 , 6.8.3.3 , 6.8.3.4 | |
| 1.3.4.1 | The User Interface function shall provide the capability for travelers to access the system by utilizing interactive devices that include, but are not limited to, the following: |
| PSpecs*: 6.6.3 , 6.7.1.3 , 6.8.1.1.1 , 6.8.3.3 , 6.8.3.4 | |
| 1.3.4.1(a) | Visual displays. |
| PSpecs*: 6.6.3 | |
| 1.3.4.1(b) | Keypads. |
| PSpecs*: 6.8.3.3 , 6.8.3.4 | |
| 1.3.4.1(c) | Touch sensitive devices. |
| PSpecs*: 6.8.3.3 , 6.8.3.4 | |
| 1.3.4.1(d) | Computer generated voice. |
| PSpecs*: 6.7.1.3 , 6.8.1.1.1 | |
| 1.3.4.1(e) | Voice recognition system. |
| PSpecs*: 6.7.1.3 , 6.8.1.1.1 | |
| 1.3.4.2 | Mobile systems shall use the best information available to provide routing instructions. |
| PSpecs*: 6.2.5 , 6.6.1 , 6.6.2.1 , 6.6.2.2 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.7.3.1 , 6.7.3.2 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.4.2.1 | Mobile systems shall provide the capability for individual travelers to customize the routing selected for them. |
| PSpecs*: 6.6.1 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.4.2.2 | Mobile systems shall allow customization of traveler's routing based on certain conditions specified by the traveler to include, but not be limited to, the following: |
| PSpecs*: 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.7.3.1 , 6.7.3.2 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.4.2.2(a) | Avoid expressway-type highways. |
| PSpecs*: 6.7.1.1.3 | |
| 1.3.4.2.2(b) | Avoid multiple mass transit transfers. |
| PSpecs*: 6.7.3.1 , 6.7.3.2 | |
| 1.3.4.3 | Infrastructure-based systems shall permit individual travelers to customize their routing selection. |
| PSpecs*: 6.2.5 , 6.6.1 , 6.6.2.1 , 6.6.2.2 , 6.6.4 , 6.6.5 , 6.7.1.1.1 , 6.7.1.1.2 , 6.7.1.1.3 , 6.7.1.2 , 6.7.1.3 , 6.8.1.1.1 , 6.8.1.1.2 , 6.8.1.1.3 , 6.8.1.2 | |
| 1.3.4.3.1 | Infrastructure-based systems shall use the traveler's destination information to estimate extra demand on the transportation system and then provide routing to the traveler based on this predicted demand. |
| PSpecs*: 6.2.5 , 6.6.2.1 , 6.6.2.2 , 6.6.5 |

