A Compendium Of Traffic Model Validation Documentation And Recommendations - Phase 1 - Tasks A-H

Details

• Subject/TRT Terms:
  EVALUATION/PROGRAM ASSESSMENT
• Resource Type:
  Tech Report
• Corporate Publisher:
  United States. Joint Program Office for Intelligent Transportation Systems
• Abstract:
  THE INTENT OF THIS REPORT IS TO CONSOLIDATE THE DOCUMENTATION DELIVERED TO FHWA FOR THE DATABASES FOR ASSESSMENT OF OPERATION TESTS AND TRAFFIC MODELS CONTRACT.

  
  
  SOME INTRODUCTORY REMARKS ARE REQUIRED TO UNDERSTAND THE RATIONAL USED IN THE WHITE PAPERS PROVIDED IN THIS COMPENDIUM. SEVERAL MONTHS INTO THIS PROJECT, IT BECAME CLEAR TO KAMAN AND FHWA THAT VALIDATION AND CALIBRATION OF THE TRAF FAMILY OF CODES IN THEIR PRESENT FORM WAS NOT GOING TO BE A FRUITFUL EXERCISE NOR AN EFFICIENT USE OF RESOURCES. THIS IS BECAUSE THE TRAFFIC CODES HAVE BEEN DEVELOPED AND MODIFIED PRIMARILY TO PERMIT MACROSCOPIC EVALUATIONS OF TRAFFIC FLOW. THUS THE MODELS SIMULATE GENERAL TRENDS IN THE TRAFFIC PATTERNS, NOT ABSOLUTES. IN ADDITION, THE IMPLEMENTATION OF THE CODE HAS NOT BEEN WELL DOCUMENTED TO PERMIT EASY ACCESS TO THE TRAFFIC PARAMETERS UNDERSTUDY. SINCE VALIDATION AND CALIBRATION IS PERFORMED ON A MICROSCOPIC
  
  LEVEL, COMPARISONS BETWEEN THE ACTUAL MEASUREMENTS AND SIMULATION RESULTS CAN BE DONE ONLY AT A VERY COURSE LEVEL TO OBTAIN CORRELATION BETWEEN THE TWO.

  
  
  

• Format:
  PDF
• Collection(s):
  ITSJPO Digital Library
• Main Document Checksum:
  urn:sha256:95e6c871343384c13eeb34c6032039494efad036bae6702f940d09c15d92e90c
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/2223/dot_2223_DS1.pdf
• File Type:
  [PDF - 2.71 MB ]