A GIS Approach to Pedestrian Level of Service Natalia Domarad 14th TRB Transportation Planning Applications Conference Columbus, Ohio May 5-9, 2013.

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Presentation transcript:

A GIS Approach to Pedestrian Level of Service Natalia Domarad 14th TRB Transportation Planning Applications Conference Columbus, Ohio May 5-9, 2013

Presentation Overview PLOS Background GIS Approach Methodology Benefits

Pedestrian LOS Evaluates performance of a pedestrian facility Benefits of HCM 2010 methodology: Traveler’s perspective Consistent systematic evaluation Identify system deficiencies Simple results Different scales

PLOS Methodology Complex Many input variables Computationally intensive

GIS Approach Data can be easily modified and updated Workflow visualization Automation Field measurements from your desk Geodatabase and tools

PLOS Organization ModelBuilder Workflow visualization Testing workflow Track analysis steps

Input Variables Signal timings Traffic and pedestrian counts Measurements Site characteristics

Measurements & Site Characteristics Aerial Photo Aerial Oblique Imagery Copyright ©2011 Pictometry International Corp.

Assumptions Most conservative scenario Measurements & site characteristics PM peak hour Mid block pedestrian volumes

PLOS Geodatabase Intersections and segments Traffic count table Relational Tools

Calculating PLOS Python script tool Fast processing Automation Error checking Documentation

PLOS Output Crosswalk Average pedestrian space Link Segment Display LOS

Mapping Spatial overview of data Visualize problem locations Technical/non-technical audiences

Geodatabase Allows repetition and modification Store records of historical PLOS All data and tools in one location

Summary User friendly Maintains HCM 2010 level of detail Eliminates additional field data collection Next steps: Incorporate MMLOS

Thank you! Questions? Natalia Domarad