trans_sys_chap27

trans_sys_chap27 - Introduction to Transportation Systems 1...

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Unformatted text preview: Introduction to Transportation Systems 1 PART III: TRAVELER TRANSPORTATION 2 Chapter 27: Deterministic Queuing 3 Deterministic Queuing Applied to Traffic Lights Here we introduce the concept of deterministic queuing at an introductory level and then apply this concept to setting of traffic lights. 4 Deterministic Queuing Deterministic Queuing In the first situation, we consider (t), the arrival rate, and (t), the departure rate, as deterministic. Deterministic Arrival and Departure R ates (t) (t) Figure 27.1 5 Deterministic Queuing Deterministic Arrival and Departure Rates (continued) (t) vehicles/hr 2000 1000 time time 1 2 3 4 (t) vehicles/hr 1500 Figure 27.1 6 Queuing Diagram Cumulative Arrivals 4000 3000 2000 1000 available capacity for departure arrivals maximum queue = 500 available capacity for departure Time 1 2 3 4 5 (hours) Figure 27.2 7 Another Case Now, the numbers were selected to make this simple; at the end of four hours the system is empty....
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This note was uploaded on 12/06/2011 for the course ESD 1.221j taught by Professor Josephsussman during the Fall '04 term at MIT.

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trans_sys_chap27 - Introduction to Transportation Systems 1...

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