  One of the objectives of understanding pedestrian behavior is to predict the
effect of proposed changes in the design or evaluation of pedestrian
facilities. We want to know the impact to the user of the facilities, as the
design of the facilities change. That impact was traditionally evaluated by
level of service standards. Another design criterion to measure the impact of
design change is measured by the pedestrian flow performance index. This paper
describes the determination of pedestrian flow performance based video tracking
or any microscopic pedestrian simulation models. Most of pedestrian researches
have been done on a macroscopic level, which is an aggregation of all
pedestrian movement in pedestrian areas into flow, average speed and area
module. Macroscopic level, however, does not consider the interaction between
pedestrians. It is also not well suited for prediction of pedestrian flow
performance in pedestrian areas or in buildings with some obstruction, that
reduces the effective width of the walkways. On the other hand, the microscopic
level has a more general usage and considers detail in the design. More
efficient pedestrian flow can even be reached with less space. Those results
have rejected the linearity assumption of space and flow in the macroscopic
level.
