Genetic Algorithm Based Stochastic Optimization for Preempted Signals at Highway Railroad Grade Crossing Genetic Algorithm-Based Stochastic Optimization for Preempted Signals at Highway Railroad Grade Crossing
نویسندگان
چکیده
................................................................................................................................... 5 INTRODUCTION .......................................................................................................................... 6 LITERATURE REVIEW ............................................................................................................... 7 Manuals and Guidance on Preemption Operation ...................................................................... 7 Preemption Studies ..................................................................................................................... 7 Genetic Algorithm ...................................................................................................................... 8 STUDY APPROACH ..................................................................................................................... 9 METHODOLGY ............................................................................................................................ 9 Selection of the Study Area ........................................................................................................ 9 Constructing the VISSIM Network .......................................................................................... 11 Initializing the GA .................................................................................................................... 11 Updating the Signal Controller ................................................................................................. 11 Running VISSIM through VISSIM COM Interface ................................................................. 11 Evaluating Results .................................................................................................................... 11 Termination Criteria.................................................................................................................. 12 Generation of New Population.................................................................................................. 12 RESULTS ..................................................................................................................................... 13 Preemption Phase Sequence ..................................................................................................... 13 Optimization of Signal Phase Length ....................................................................................... 14 CONCLUSIONS........................................................................................................................... 18 ACKNOWLEDGMENT............................................................................................................... 19 REFERENCES ............................................................................................................................. 19 APPENDICES .............................................................................................................................. 21 Appendix A: HRGC Accident/Incident Report ........................................................................ 21 Appendix B: Ranked HRGCs by WBAPS ............................................................................... 22
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