Abstract
1. Improvement in understanding, calibrating and applying the opportunity model. 2. Effect of zone size on zonal interchange calculations based on the opportunity model in a homogeneous region. 3. Modal split in the penn-jersey transportation study area. 4. Effect of trip direction on interzonal trip volumes. 5. Tri-state transportation commission's freight study program. 6. The analysis of land-use linkages. 7. Direct estimation of traffic volume at a point. 8. Covariance analysis of manufacturing trip generation.