San Diego Land-Use Model Assessment
San Diego Association of Governments (SANDAG)
RSG is leading an effort to assess the performance of the current SANDAG Production, Exchange and Consumptions Allocation System (PECAS) land-use model implementation, and make recommendations to establish improved and more direct integration between PECAS and the SANDAG CT-RAMP activity-based travel demand model (ABM). The recommendations address both conceptual and practical considerations associated with the integration of the two models, such as refinements to the methods used to exchange information between CT-RAMP and PECAS, and the necessity of redefining coefficient values and recalibrating PECAS as necessary to improve model performance. The recommendations are informed by the results of a set of systematic PECAS performance evaluations implemented by the project team, and are also based on a detailed review of available model documentation and related resources, and an assessment of model strengths and weaknesses.