Natchez and Vicksburg, mississippi
Mississippi Travel Demand Models
Alliance developed two Travel Demand Models in TransCAD for the Mississippi Department of Transportation. The models were developed for Natchez and Vicksburg. Alliance’s responsibilities included creating the model blue prints; assembling the required base year study area roadway, boundary geography, socio-economic and land use data; developing highway networks; developing an appropriate set of Traffic Analysis Zones (TAZ); constructing the trip generation, trip distribution, and traffic assignment modeling steps; and validating the models. Additionally Alliance forecasted land use and demographic variables utilizing stakeholder involvement, and applied the model using the models Alliance developed interface that combines the model components and automates the process.
The MDOT roadway network required verification and correction. This task was accomplished by driving the entire network and recording GPS data and digital video of the network conditions. The video was cross referenced with the existing network allowing the network to be reviewed for accuracy. A custom interface was developed that allows important network features such as speed limit, number of lanes, intersection control, and shoulder width to be collected from the video.