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- KurzbeschreibungThe LHOVRA is the predominant isolated <br>signal control strategy in Sweden. Past-end green <br>was originally incorporated as part of LHOVRA <br>(the O function) and was intended to reduce the <br>number of vehicles in the dilemma zone. Coordinated <br>signal control in Sweden is often fixed-time with <br>local vehicle actuated signal timing adjustments and <br>bus priority. <br>The aim was to evaluate the following <br>strategies using Stockholm as a case study: <br>1. The LHOVRA technique with a focus on the O <br>function;<br>2. Fixed time coordination (FTC); <br>3. Fixed time coordination with local signal <br>timing adjustment (FTC-LTA); <br>4. FTC-LTA as above + active bus priority <br>(PRIBUSS);<br>5. Self-optimizing control (SPOT). <br>Field measurements were used for study of driver <br>behavior and traffic impacts. VISSIM & HUTSIM <br>simulation models calibrated and validated with <br>empirical data were used to study traffic <br>performance and safety impacts of the suggested <br>improvements. TRANSYT was used to produce optimized <br>signal timings. <br>A method to calculate the approach delay was <br>developed based on the observed number of queuing <br>vehicles at the start and end of green.
- AutorAzhar Al-Mudhaffar
- Seiten232 Seiten
- Gewicht362 g
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