On rural highways it is the percent of time spent following And on freeways it is density (cars per mile per lane) E/Fīicycle LOS is the composite of scores based on the following factors: Traffic volume Pavement condition Buffer/Separation widths Speed of Traffic E/F Site Impact Project Development Future Year Analysis Otherġ4 The Users Perspective Q/LOS is a letter grade analysis as perceived by the travelerġ5 Automobile LOS A/B C/D E/F On arterials it is the average travel speed Initial problem identification Delay calculation Future year analysis Conducting alternatives analyses Assessing development impacts When seeking a greater level of precision ARTPLAN input files can be uploaded into the HCS Potential Accuracy CORSIM (Microsimulation) TRANSYT-7F HCM | TCQSM BLOS | PLOS (Simple Operational Analysis) ARTPLAN FREEPLAN HIGHPLAN (Preliminary Engineering) Generalized Tables (Generalized Planning) Effort/ComplexityĨ Exporting Data to Highway Capacity Software (HCS) Following completion of download the user becomes part of the larger LOSPLAN user group and automatically receives software updates.ħ Capacity/LOS Analyses and Evaluation Tools The LOSPLAN software can be downloaded from Department’s Internet page.
Generalized Planning Tables Preliminary Engineering Software The entirety of FDOT’s Traffic Analysis Toolbox can be found at the above web address.Ħ The LOSPLAN software can be downloaded from Department’s Internet page Quickly predict impacts Widely accepted Advantages of Analytical/Deterministic Tools Both HCM and QLOS Handbook can Quickly predict impacts for an isolated area Are widely accepted (consensus of expert opinion)ĥ LOS Planning/Preliminary Engineering Tools
Whereas the QLOS Handbook is equipped to provide facility level analysis Analyze the performance (capacity, density, speed, delay, and queuing) for small segments of the transportation system Facility Level Analysis Detailed Point & Segment AnalysisĤ Advantages of Analytical/Deterministic Tools
The HCM allows for more detailed inputs at a point and segment level. Is the nationally recognized document that serves as a foundation for FDOT’s analysis tools Transportation Research Board’s (TRB) Highway Capacity Manual (HCM)ģ HCM Quality/Level of Service (QLOS) Handbook 1 Traffic Analysis Toolbox & Highway Capacity Manual TransitionĢ Transportation Research Board’s (TRB) Highway Capacity Manual (HCM)
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