SF Pedestrian Exposure Study
UC Berkeley
April 21, 2006

Objective: Characterize typical airborne particulate and noise exposures experienced by pedestrians in downtown San Francisco.

Methods: Utilize a pervasive sensing approach consisting of datalogging wearable GPS receivers, noise dosimeters, airborne particulate monitors, and digital cameras.

Results: 

Figure 1. Map of 15-second LEQ average noise levels (dBA). Numbered locations correspond to photo IDs below.

Figure 2.  Map of airborne ultrafine particles (per ft³). Numbered locations correspond to photo IDs below.

Figure 3.  Histogram of noise levels experienced during walk (15-second LEQ dBA).

Figure 4.  Histogram of airborne ultrafine particles (per ft³).

Photos taken during pedestrian study (IDs correspond to numeric labels in the maps above): [ open a duplicate window to compare photos with figs above ]

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