The first section identifies the underlying technology trends Is a section discussing the outlook for traveler information. Organized into three exploratory sections, each ending with a Traveler information over the next 5 years. Vation that focuses on trends likely to affect the provision of This chapter presents an overview of technology and inno. Weather forecasts and highlights recent technological meansįor transmission of traveler information, including personal. Signs, 511 phone systems, and websites describes how reli-Ībility information is communicated in other fields, such as Information disseminated mainly through variable message Rics outlines the prevalent formats and types of reliability Travel time is between 40 min and 50 min with a 10% prob-Ībility that the trip will take more than 50 min given currentĬhapter 2 provides the definitions of trip reliability met. Is driving to the airport may be informed en route that the Trip reliability information can be delivered to the Torically, the average travel time to the airport on a rainy Fri-ĭay afternoon is 45 min, but the 95th percentile travel time isħ0 min. To the airport because he or she has been informed that, his. For example, a traveler may budget 75 min for a trip The basis of the travelerâs willingness to accept the risk of lateĪrrivals. Help determine an appropriate departure time and route on Information on historical trip time variability can be used to Âexpect delaysâ or â20 minutes to downtownâ?). Of traveler information (e.g., How reliable are the messages Through two distinct lenses: (1) information on the histori-Ĭal trip time variability of a specific trip and (2) the reliability Trip reliability information for travelers can be interpreted Potential for traveler information granularity, coverage, andĪccuracy far exceeding what has historically been available andĬonsequently will offer the opportunity for delivering trip reli-Ībility information in a variety of forms, both traditional and These con-Ĭurrent trends in technology and innovation will provide the Web content toward in-vehicle devices with innovative voice-īased transactions and head-up displays (HUDs).
Increasing in sophistication beyond dynamic message signs and Furthermore, the means of transmitting information are Real-time and historical dataâboth quantitative and qualita. Grating multiple data are becoming more sophisticated andĬomplex as well, blending multiple sources of data, including Traveler-to-traveler information sharing.
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Such as loop detectors and infrared sensors, to video imaging,Ĭell phone tracking, Bluetooth monitoring, GPS traces, and The methods of measuring travel con-ĭitions also have evolved beyond traditional technologies, Tors, and social networking applications now offer access to The array of organizations providing traveler informationĬontinues to broaden beyond traditional public agencies and System status data has greatly increased information accessi-īility and permitted an ever-greater degree of traveler-specific The resulting mix of traffic and transportation Number of media, ranging from traditional roadside signageĪnd broadcast media to newer electronic wireless and web-īased media. Today, travelers can acquire traveler information through a Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages. Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book.
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