Applications of Automatic Control Concepts to Traffic Flow by M. Papageorgiou

By M. Papageorgiou

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Extra info for Applications of Automatic Control Concepts to Traffic Flow Modeling and Control

Sample text

Thout going into details, the modeling procedure on the point processes we will briefly outline for the case of a single intersec- tion. The idea behind this approach has been to enable the design of closed-loop with moderate control flow condi%ions systems for traffic networks (not oversatured). 13. Assume that there is one detector located N vehicle length from the stop line. 45) otherwise~ For simplicity, it is assumed that each vehicle produces exactly one pulse. ,N. II ....... 13 - A simple intersection with detector measurements.

1 - State reconstruction with four input variables. 43 In an o f f - l i n e priori tor e r r o r s and besides, In an o n - l i n e fullfill~d. surements are m o r e an i n i t i a l condition however, conditions or less above inaccurate. 2 m a y result. process the m e t h o d Because ments u s e d as w i ~ be shown both of the s t o c h a s t i c and t r a f f i c dynamics, qo~ II Figure effects shown to fit for comin figure of i n p u t set d e p e n d s resp. upon section. 2 - S t a t e r e c o n s t r u c t i o n output variables.

9. 18), inadequate state point. 19) of the fact are performed Introduction considerations around an of a switching strate- led to an improvement of the estimates. 10. 10 shows that estimates are not considerably correction .......... 120 ............. in fi- so that the is not detected. 1) produces l l O is considered Kalman Filter an algorithm without a non existing congestion. lOO; ......... ), estimated without with correction of i n c i d e n t s detection only speed m e a s u r e d are c o m p l e t e l y to a s i g n i f i c a n t of view, depending accidents on w h e t h e r or p a r t i a l l y change closed of the p r o c e s s e s on a f r e e w a y is one of the m o s t in the a r e a of t r a f f i c point of s e v e r i t y or a c c i d e n t d a t a are a v a i l a b l e data processing.

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