Capacity Analysis of Pedestrian and Bicycle Facilities:
Recommended Procedures for the "Signalized Intersections" Chapter of the Highway Capacity Manual

Sections
List of Figures
List of Tables


Sections
 
  1. INTRODUCTION


  2. BACKGROUND


  3. RESEARCH METHODOLOGY


  4. PROPOSED REVISIONS TO HCM CHAPTER 9 PROCEDURES

    5. 4.1 Overview of Recommended Procedure for Determining fLpband fRpb

    4.2 Details of Recommended Procedure for Determining fLpb and fRpb

  5. EXAMPLE PROBLEMS


  6. CONCLUSIONS AND RECOMMENDATIONS


    7. Conclusions
    Recommendations

  7. REFERENCES

  8. TECHNICAL DOCUMENTATION PAGE
   

List of Figures
   

Figure 1 Pedestrians and bicycles causing delay to turning vehicles in Eugene, Oregon
Figure 2 Opposing traffic screens pedestrians from the view of left-turning drivers at this intersection in Chicago, Illinois

Figure 3 Pedestrians affect left turns when there is no opposing traffic at the same Chicago, Illinois, intersection
Figure 4 Comparison of various right-turn saturation flow adjustment factors due to pedestrians
Figure 5 Sample conflict zone locations
Figure 6 Queued turning vehicles waiting for a gap in a pedestrian stream in Portland, Oregon
Figure 7 Outline of computational procedure for fRpb and fLpb
Figure 8 Pedestrians causing substantial delay to an "unopposed" left turn in Portland, Oregon
Figure 9 Supplemental worksheet for pedestrian-bicycle effects on permissive right turns
Figure 10 Supplemental worksheet for pedestrian effects on permissive left turns
Figure 11 Comparison of ApbT with other adjustment factors for pedestrians
Figure 12 Through bicycles delay right-turning vehicle in Gainesville, Florida
Figure 13 Turning driver having two receiving lanes to choose from in Portland, Oregon
Figure 14 Example sketch
Figure 15 Existing HCM method of capturing the effect of pedestrians on lane groups containing turning vehicles
Figure 16 Impact of proposed method for capturing the effect of pedestrians on lane groups containing turning vehicles


List of Tables
   

Table 1 Data collection site characteristics
Table 2 Input Requirements for Determination of fRpb and fLpb
Table 3 List of symbols used in determination of fRpb and fLpb
Table 4 Intermediate Pedestrian-Bicycle Parameters: Pedestrian Conflict Zone Occupancy (OCCpedg)
Table 5 Intermediate Pedestrian-Bicycle Parameters: Relevant conflict Zone Occupancy (OCCr) For Right Turns or Unopposed Left Turns
Table 6 Intermediate pedestrian-Bicycle Parameters: Conflict Zone Occupancy After Opposing Queue Clears (OCCpedu) for Opposed Left Turns
Table 7 Intermediate Pedestrian-Bicycle Parameters: Relevant Conflict Zone Occupancy (OCCr After Opposing Queue Clears for Opposed Left Turns
Table 8 Intermediate Pedestrian-Bicycle Parameters: Permitted Phase Turning Adjustment (ApbT) For Right And left Turns
Table 9 Proposed Adjustment Factor For Pedestrian-Bicycle Effect On Right Turns (fRpb)
Table 10 Proposed Adjustment Factor for Pedestrian Effects on Left Turns(fLpb)
Table 11 Proposed Adjustment Factor for Radius Effects on Right Turns (fRT)
Table 12 Existing and proposed saturation flow adjustment factors for lane groups containing turning vehicles
Table 13 Examples showing impact of proposed adjustment factors on capacity
Table 14 Recommended HCM pedestrian Level of Service (LOS) criteria for signalized crossing delay