| 1.0 | TRAVEL AND TRAFFIC MANAGEMENT |
| 1.2.0 | ITS shall include an En-Route Driver Information (DI) function. Driver Information provides vehicle drivers with information, while en-route, which will allow alternative routes to be chosen for their destination. Driver Information consists of two major functions which are (1) Driver Advisory and (2) In-vehicle Signing. The potential decrease in traffic may also provide benefits in highway safety, reduced air pollution, and decreased congestion. |
| 1.2.1 | DI shall include the following general requirements. |
| 1.2.1.1 | DI shall be implemented in a manner that helps improve highway safety. |
| 1.2.1.3 | DI shall be implemented in a manner that helps decrease congestion. |
| 1.2.1.5 | DI shall include a driver advisory capability and an in-vehicle signing capability. |
| 1.2.3 | DI shall provide an in-vehicle signing capability. |
| 1.2.3.1 | The DI in-vehicle signing function shall include a short term capability to serve the more immediate needs of travelers. |
| 1.2.3.1.1 | The short term in-vehicle signing function shall include the capability to provide assistance to individuals with impaired vision. |
| 1.2.3.1.2 | The short term in-vehicle signing function shall include the capability to provide assistance to individuals needing local guidance in areas that the driver is unfamiliar with (e.g., airports, resort areas). |
| 1.2.3.1.3 | The short term in-vehicle signing function shall include the capability to provide assistance to individuals in areas that frequently have conditions of poor visibility. |
| 1.2.3.1.4 | The short term in-vehicle signing function shall be implemented in a manner that augments existing signs. |
| 1.2.3.1.4.1 | The short term in-vehicle signing function shall augment control signs (e.g., stop signs). |
| 1.2.3.1.4.2 | The short term in-vehicle signing function shall augment warning signs (e.g., slow signs). |
| 1.2.3.1.5 | The short term in-vehicle signing function shall provide a user interface that allows travelers to access its capabilities. |
| 1.2.3.2 | The DI in-vehicle signing function shall include a long term capability to serve more of the traveler's needs. |
| 1.2.3.2.2 | The long term in-vehicle signing function shall provide the capability to customize warnings. |
| 1.2.3.2.2.1 | The customized warnings function shall provide the capability to control the contents of warning messages to the extant environmental conditions. |
| 1.2.3.2.4 | The in-vehicle signing function shall provide travelers with information on road conditions. |
| 1.2.3.2.5 | The in-vehicle signing function shall provide travelers with precautionary reminder messages. |
| 1.3 | ROUTE GUIDANCE |
| 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. |
| 1.3.3 | RG shall include a Real-Time Mode for issuing information to travelers. |
| 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: |
| 1.3.4 | RG shall include a User Interface function. |
| 1.3.4.2 | Mobile systems shall use the best information available to provide routing instructions. |
| 1.3.4.2.2 | Mobile Systems customizing of traveler's routing shall be based on certain conditions specified by the traveler to include, but not be limited to, the following: |
| 1.3.4.2.2(b) | Avoid multiple mass transit transfers. |
| 1.5 | TRAVELER SERVICES INFORMATION |
| 1.5.2 | TSI shall include an Information Access function that allows travelers to access the available information. |
| 1.5.2.5 | Information Access shall provide the capability for travelers to access the TSI information via any of, but not limited to, the following methods: |
| 1.5.2.5(e) | In-vehicle computers. |
| 1.8 | TRAVEL DEMAND MANAGEMENT |
| 1.8.1 | TDM shall include a communications function. |
| 1.8.1.6 | The communications function shall include the capability for two-way communications with other ITS user services including, but not limited to, the following: |
| 1.8.1.6(c) | Driver Information. |
| 2.0 | PUBLIC TRANSPORTATION MANAGEMENT |
| 2.2.0 | ITS shall include an En-Route Transit Information (TI) function. En-Route Transit Information provides travelers with real-time transit and high-occupancy vehicle information allowing travel alternatives to be chosen once the traveler is en-route. It consists of three major functions which are (1) Information Distribution, (2) Information Receipt, and (3) Information Processing. This capability integrates information from different transit modes and presents it to travelers for decision making. |
| 2.2.1 | TI shall include an information distribution function that disseminates information to travelers. |
| 2.2.1.1 | Information Distribution shall include an information network capability. |
| 2.2.1.1.1 | The Information Network shall provide the capability to furnish users with real-time travel related information while they are traveling. |
| 2.2.1.2.2 | User Interface shall provide the capability for users to access travel related information at mobile locations. |
| 2.2.1.2.2.1 | Mobile Location user interfaces shall provide the capability for users, either one passenger at a time or to a group environment, to access travel related information while on board transit vehicles. |
| 2.2.1.2.2.2 | Mobile user interfaces shall provide the capability for users to access travel related information while in transit vehicles through the use of variable message signs. |
| 2.2.1.2.2.3 | Mobile user interfaces shall provide the capability for users to access travel related information via personal portable devices. |
| 2.2.1.2.2.4 | Mobile user interfaces shall include the capability to provide audible messages to the on-board users. |
| 6.5 | SAFETY READINESS |
| 6.5.0 | ITS shall include a Safety Readiness Service. |
| 6.5.3 | Safety Readiness Service shall include an Infrastructure Condition Subservice. |
| 6.5.3.1 | Infrastructure Condition Subservice shall be provided by an In-Vehicle Infrastructure Advisory System. |
| 6.5.3.1.2 | In-Vehicle Infrastructure Advisory System shall a notify the driver of the need to take corrective action. |
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