Flow direction: Bidirectional

Boundary condition: Open

Places of research: Sidewalks at the University of Missouri and Stephens College (field studies)

Widths of sidewalks:

• w = 1,83 m (Stephens College)
• w = 1,22 m (University of Missouri)
• w = 2,14 m (University of Missouri)
• w = 2,44 m (University of Missouri)

Subjects:

• Young adults (approx. 18 - 25 years)
• Solely females at Stephens College
• Mixed at University of Missouri

Data collection:

• Time lapse (four frames per second) color photographs of the test sections were taken from an elevated position.
• Control points at the edges of the walk and a grid were placed on the section, photographed and removed, except the control points, during observation.
• The grid was projected on a screen, control points and coordinates marked and the grid lines were drawn. The control points were used to reposition the projected image as data translation proceeded.
• The approximate center line of the individual was located on the grid and the position recorded in cartesian coordinates.
• Each fourth frames (one second in elapsed time) was used as a data source with pedestrians identified by test section, flow direction, number, sex and x-y location.
• The data of time and location were used to calculate the average speed of every single pedestrian and the concentration of pedestrians in each observation.