Application of New Pedestrian Level of Service Measures - sacog

Application of New Pedestrian Level of Service Measures
SACOG
each segment. The MMLOS model is calibrated for signalized intersections. Therefore, only
segments with signalized intersections were analyzed with the MMLOS model. The full
technical MMLOS model methodology can be found in Appendix A.
Pedestrian Performance Measures (PPM) Model Methodology
The second model used comes from Transportation Research Record 1538, entitled “Bicycle
and Pedestrian Level‐of‐Service Performance Measures and Standards for Congestion
Management Systems.”
Unlike the MMLOS model, which uses complex and detailed formulas to evaluate pedestrian
facilities, the PPM model uses a simple point system (0‐21) that assigns a certain value to
each criterion. Facilities earn points based on the number of criteria they meet. Like the
MMLOS model, the PPM model considers more than one mode (pedestrian and bicycle), but
this Pedestrian Level of Service Analysis only reports the pedestrian score. Also like the
MMLOS model, the PPM model output is a numerical value that must be translated into a
letter grade LOS. See Exhibit E below for the numerical values that coincide with each LOS
letter grade.
The PPM model considers the following factors:
Presence, condition, and width of
the pedestrian facility/sidewalk
Maintenance issues with the
pedestrian facility/sidewalk
Curb cuts
Number of driveways and side
streets per mile
Delay crossing side streets
Conflict with left‐ and right‐turning
vehicles
Side street crossing width
Posted speed limit
Presence of median
Buffer between vehicle traffic and
pedestrians
Pedestrian amenities (benches,
lighting, shade trees)
Automobile LOS
Transportation Demand
Management (TDM) programs and
treatments
The scoring rubric for the PPM model is shown in Exhibit F. For a full description of the
criteria used in the PPM model, see Appendix B.
Exhibit E: LOS Letter Grade Numerical Equivalent
Score
LOS
Model > 17
A
17 >= Model > 14 B
14>= Model > 11 C
11 >= Model > 7 D
7 >= Model >3 E
Model