Flow direction: Unidirectional

Boundary condition: Open

Place of research: Mecca, Saudi Arabia (during Hajj)

Subjects: Mainly male pilgrims

Data collection:

• Video recordings of a 27.7 m x 22.5 m large area in front of a 44-m-wide entrance of a bridge were evaluated.
• With a computer algorithm the positions and speeds of the pedestrians were extracted.
• The evaluation of the video recordings was restricted to a 20 m X 12 m wide area in order to avoid any boundary effects of the measurment algorithm.
• The resolution of the video recordings was 25 pixels per meter and 8 frames per second.