A forecasting method of trip generation based on land classification combined with OD matrix estimation

Based on the traffic analysis zones (TAZ) divided according to the type of land use, the trip generation volume of each TAZ can be calculated by using trip generation rates in land classification method, which urges us to find appropriate generation rates to ensure the reliability of the results. While OD matrix estimation method can acquire trip generation volume according to the volume of road sections with the drawback that this method requires to complete road traffic data and reasonable prior matrix. The paper combines the advantages of the two methods mentioned above. First, the trip generation volume of each TAZ is still calculated based on the generation rates, which can be used to calibrate the OD matrix estimation model. Once the OD matrix is estimated, the generation rates can be refined, and thus a new OD matrix can be computed. Then keep adjusting the data until it meets the accuracy demand. At last, a statistical test which can be used to judge the iteration will be presented.