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WMATA Real-Time Parking Information Feasibility Study Table 5-3 Sample Messages Message - Time Type of Message (website, eAlert) OPEN – High availability (weekends, evenings, early mornings, off-peak hours) FILLING – Limited availability (early AM rush, afternoons, events) expected time till full of less than 60 minutes NEAR FULL – Near capacity (peak AM rush, events) expected time till full of less than 10 minutes FULL – No availability (peak AM rush, events) Summary Chapter 5: OPTIONS AND PREFERRED SYSTEM FOR WMATA Type of Message (DMS) Nonspecific availability information: • Parking is available • Costs are $X.XX and can be paid via SmarTrip, credit card or toll tag (optional) • Pointer to reservation information Parking Open at STATION Detailed availability information: • Description of limited availability (“As of TT:TT, 40 spaces are available at West Falls Church”) • Costs are $X.XX and can be paid via SmarTrip, credit card or toll tag (optional) • Pointer to reservation information STATION Parking / YY Spaces Open Nonspecific availability information: • Description of near capacity (“As of TT:TT, less than 10 spaces are available at West Falls Church”) • Availability at other stations (“(No) Parking is available at Vienna-Fairfax.”) STATION Parking / Less Than 10 Spaces Open (or Near Full) • Unavailability message (“Sorry, parking at the West Falls Church station is currently full.” • Availability at other stations (“(No) Parking is available at Vienna-Fairfax.”) STATION Parking Closed / YY ADA Spaces Open (or carpool or other category) The preferred concept will use a mixture of space detection and zonal detector to provide the best balance of benefit and cost. Parking information - facility identifier, spaces available or occupied (by type of space), and a date / time stamp - will be transmitted back to WMATA operations center in real or near real time. In addition, the current status (open, near full, full, closed) and the nearest alternative with available parking will be calculated. Once the information is received and additional fields are calculated, the information received from each garage can be provided by WMATA to the public through dynamic message signs, the internet, and mobile devices. Furthermore, the system will be compatible and integrated with VDOT, the Regional Integrated Transportation Information System (RITIS), and the 511 Virginia system. Page 5-24 June 2009
WMATA Real-Time Parking Information Feasibility Study Chapter 6 PILOT PROJECT CONCEPT This chapter presents the concept for the Pilot Project. While not intended to represent a detailed design, this chapter serves as a starting point for the full design of the pilot system. The chapter includes recommendations on the system architecture, hardware and software requirements, operational considerations, and potential funding mechanisms. This chapter documents the development of the system concept for the pilot implementation. The chapter defines the location of the pilot implementation, presents a design concept, and provides more specific cost estimates. Later sections describe anticipated issues, problems, and areas of concern regarding the pilot implementation process of the parking information system. While not intended to represent a detailed design, this chapter serves as a starting point for the full design of a pilot system. Because the intent of the pilot study is to develop the concept and determine if it is a viable tool for further implementation, not all of the requirements developed in Task 3 are included in the pilot study. While this document addresses the anticipated major issues, it should not be considered a complete and exhaustive list of all potential issues. In relation to the systems engineering “Vee” diagram, the cumulative work of this project has addressed the items highlighted in green in Figure 6-1. This began slightly before the Concept of Operations, and will end at the start of High-Level Design. 4 This is about one-half the way down the left leg “Decomposition and Definition” portion of the “Vee” diagram, as shown below in Figure 6-1. Figure 6-1 Systems Engineering Process 4 A full description of the systems engineering process is found in Systems Engineering for Intelligent Transportation Systems, U.S. Department of Transportation, Chapter 3, page 11; also available online at http://ops.fhwa.dot.gov/publications/seitsguide/index.htm. Page 6-1 June 2009
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