1. National Research Council (NRC). Highway Capacity Manual 2000, Washington, D.C., 2000.
2. Service level analysis of exhibition halls for large-scale activities;Wu;Journal of Tongji University (Natural Science),2007
3. Jaskiewicz F. Pedestrian Level of Service Based on Trip Quality, TRB Circular E-C019, Washington, D.C., 2000.
4. Pedestrian level of service and quality of operations assessment methods;Virginia,2002
5. Sheila S. Determination of service levels for pedestrians with European examples. Transportation Research Record 1405, TRB, National Research Council, Washington, D.C., 1993, 35–42.