Application of New Pedestrian Level of Service Measures - sacog

Application of New Pedestrian Level of Service Measures
SACOG
Outside travel lane width (+)
Bicycle lane/shoulder width (+)
Buffer presence (i.e. on‐street parking, street trees) (+)
Sidewalk presence and width (+)
Volume and speed of motor vehicle traffic in outside lane (‐)
Block length (‐)
The MMLOS model also considers a pedestrian density score. If the density score is worse
than the segment score described above, the density score is used in place of the segment
score. If the density score is better than the segment score, the segment score is used.
The pedestrian Intersection Score considers:
Permitted left‐turn and right‐turn‐on‐red volumes (‐)
Cross‐street motor vehicle volumes and speed (‐)
Crossing length (‐)
Average pedestrian delay (‐)
Right‐turn channelizing island presence (+)
The pedestrian Roadway Crossing Difficulty Factor (RCDF) measures the difficulty of
crossing the street between signalized intersections. The RCDF worsens the pedestrian LOS
if the crossing difficulty is worse than the noncrossing LOS for the facility. It improves the
pedestrian LOS if the crossing difficulty LOS is better than the non‐crossing difficulty LOS.
The RCDF considers the following:
Delay waiting for safe gap to cross
Delay diverting to the nearest signalized intersection to cross
The output of the MMLOS model is a numerical value (1‐6) that must be translated into a
LOS letter grade. The letter grades used correspond to typical automobile LOS, where LOS A
and LOS B indicate ideal conditions; LOS C and LOS D indicate satisfactory conditions; and
LOS E and LOS F indicate failed conditions. See Exhibit D below for the numerical values that
coincide with each LOS letter grade.
Exhibit D: LOS Letter Grade Numerical Equivalents
Score
LOS
Model