2 Transportation Research Board’s (TRB) Highway Capacity Manual (HCM) Is the nationally recognized document that serves as a foundation for FDOT’s analysis toolsTransportation Research Board’s (TRB) Highway Capacity Manual (HCM)
3 HCM Quality/Level of Service (QLOS) Handbook The HCM allows for more detailed inputs at a point and segment level.Whereas the QLOS Handbook is equipped to provide facility level analysisAnalyze the performance (capacity, density, speed, delay, and queuing) for small segments of the transportation systemFacility Level AnalysisDetailed Point &Segment Analysis
4 Advantages of Analytical/Deterministic Tools Quickly predict impactsWidely acceptedAdvantages of Analytical/Deterministic ToolsBoth HCM and QLOS Handbook canQuickly predict impacts for an isolated areaAre widely accepted (consensus of expert opinion)
5 LOS Planning/Preliminary Engineering Tools GeneralizedPlanningTablesPreliminaryEngineeringSoftwareThe entirety of FDOT’s Traffic Analysis Toolbox can be found at the above web address.
6 The LOSPLAN software can be downloaded from Department’s Internet page The LOSPLAN software can be downloaded from Department’s Internet page. Following completion of download the user becomes part of the larger LOSPLAN user group and automatically receives software updates.
14 The Users PerspectiveQ/LOS is a letter grade analysis as perceived by the traveler
15 Automobile LOS A/B C/D E/F On arterials it is the average travel speed On rural highways it is the percent of time spent followingAnd on freeways it is density (cars per mile per lane)E/F
16 Modal LOS Bicycle A/B C/D E/F Bicycle LOS is the composite of scores based on the following factors:Traffic volumePavement conditionBuffer/Separation widthsSpeed of TrafficE/F
17 Modal LOS Pedestrian A/B C/D E/F Pedestrian LOS is the composite of scores based on the following factors:Width of the shoulder/bike laneRoadway/Sidewalk separationRoadway /Sidewalk barrier factorPresence of sidewalkE/F
18 Modal LOS Bus A/B C/D E/F >4 buses/hour 2 to 4 buses/hour < 1 bus/hour>4 buses/hourA/BC/DModal LOS BusBus LOS is the composite of scores based on the following factors:Obstacles to the bus stopBus FrequencyBus span of serviceE/F
20 Generalized Service Volume Tables… …provide estimates of maximum service volumes for various types of Florida road facilities…represent average roadway conditions for the state, not representative of any single roadway…allow analysts to quickly and easily compare volumes to estimate LOS.
21 Peak Hour Peak Direction Types of Tables(mostly used in planning)Daily Two-WayUrbanizedTransitioning/UrbanRural(However, all are based on a peak hour peak direction analysis)Peak Hour Two-WayUrbanizedTransitioning/UrbanRuralPeak Hour Peak DirectionUrbanizedTransitioning/UrbanRural
22 Service Volume Tables In General Used in at least 10 statesFlorida has been using for over 20 yearsHalf the states have inquired about Florida's SVTsGeneral sense that most transportation professionals in favor
23 Potential Applications Quick estimate of LOSIs there a problem?System adequacyTravel demand modelsRoadway quick sizingQuick estimate of LOSIs there a problem?System adequacyState's highway systemNHS status (potentially more effective than HPMS)Travel demand modelsRoadway quick sizingSegment lane determinationIntersection configuration
24 Multimodal Quality of Service 3/31/2017Determine the maximum service volumesIn terms of annual average daily traffic (AADT) volumeIn an urbanized areaFor a freeway with:6 lanesTable Exercise 195,400LOS=C122,700LOS=E
29 Presentation Purposes Highway Capacity ManualPast, Present & FutureAdopting the 2010 HCMWhat Has To ChangeImplementing the 2010 HCMHow Long Will It Take
30 Integrated Multimodal Perspective HCM/LOS History1985:RefinedLOS Direction1965:LOS ConceptLOS has been the dominate tool for highway improvements since the 1965 HCMFDOT adopted LOS rule in 1992 with latest update in 2006One of Department’s most used and referenced inside and outside the DepartmentIssues associated with the K factor (ratio of analysis hour volume to AADT)2010:Integrated Multimodal Perspective
31 2010 Highway Capacity Manual 2010 HCMTo be published this monthReplaces 2000 HCMSignificant changesNew arterial performance measureMultimodalWhen to phase in?Receiving implementation inquiries
32 2010 HCM Implementation Issues Why Not Transition Immediately?LOSTechnicalImpactsConsistency“Standard K” FactorsRule UpdateArterialsFreewaysRulesPoliciesProceduresNeed forState-wide Consistent Response toPhasing in of 2010 HCM
33 “K” Factor: Ratio of peak hour traffic to AADT What is “Standard K”?Rather than having “K” be a traffic variable, make it a fixed parameter based on:Area TypeFacility TypeA K factor is the proportion ofAnnual Average Daily Traffic (AADT) occurring in an hour“K” Factor: Ratio of peak hour traffic to AADT
34 Importance of LOS Standards and K Factor Time and cost savings to FDOTUpdate to latest researchPromotes Better TransportationWithin DepartmentThroughout development communitySimple to understandConsistency: Planning Through DesignPositive for DevelopmentSupportive of Growth ManagementSensible ApproachPromotes better transportation policies and projectsTime and cost savings to FDOTUpdates to latest state and national researchConsistency in guidance and approach from planning through designWithin DepartmentThroughout development communitySimple to understandPolitically marketableNo cost to tax payersSupportive of growth management conceptsGenerally positive for development interests
35 2 Arterial ClassesThe 2010 HCM will not differentiate arterials based on signal densityFlorida DOT is conducting research to implement 2 arterial classes12
38 FDOT’s transition plan to the 2010 HCM represents a logical comprehensive process which includes evaluating a few key 2010 HCM changes, possibly implementing technical changes to current practice, possibly updating its level of service standards, and updating its own HCM-based software. FDOT recognizes it cannot require this transition period be applied to outside entities; however, it requests those entities accept this relatively short transition period.This slide represents the stance the Department is taking regarding implementation of the 2010 HCM and will be left on the screen as I continue to answer questions.
39 Fig 1-2 15 Automobile Bicycle Pedestrian Bus A/B C/D E/F Level of ServiceAutomobileBicyclePedestrianBusA/B>4 buses/hourC/D2 to 4 buses/hourE/F< 1 bus/hour
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