06-27-1994 Council Packet - Laserfiche WebLink

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BARTON-ASCHMAN associates , INC. •r T--r Av?-..e So'v h. Su.lf» 35C • V'^ncanc s M;n-escia 35^0* USA • (6*2i 332-CA2- • Fa*: (612) 232-b'eO MEMORANDUM TO:Trunk Highway 12 Mediation Committee COPIES TO:Charles Siggerud, Mn/DOT Metro Division Valerie Reinaas, Mn/DOT Metro Division, Project Manager Roger Williams, Mediation Services FROM: DATE: SUBJECT: Stave Ruegg June 24, 1994 Traffic Fore^iisting Initiation and Socioeconomic Data for TH 12 Corridor analysis for alternatives within this coiridor. The impact analysis will use ^e residts of the traffic forecast (along with other information) to evaluate the alternatives. The Barto - Aschman project manager for the traffic forecasting work is Mr. Steve Ruegg, who will attend the Tuesday meeting. General Methodology The travel forecasting effort will use the recently-developed regional forecast model, modified to suit the particular needs of this study. The regional model, develope join y y Mn/DOT and the Metropolitan Council, used the widely-accepted traditional four-step travel demand forecasting process. Briefly, these steps are. 1.Trip Generation:In this step, socioeconomic data is used to estimate the number and types of trips made in vehicles from particular geo^aphic areas known as lYaffic Analysis Zones (TAZs). The regional model uses, 1165 TAZs for the seven-coimty metro area. 2.Trip Distribution:The trips originating from each zone are distributed to destination zones. The amount of trips distributed between any two zones (i.e., a production zone where a trip begins and an attraction zone where a trip ends) is proportional to the total number of trips originating at the production zone and terminatmg at the destination zone. In addition, the trips are inversely proportional to the travel time between the zones. PAHSONS TPANSPORTATlON OPOUP A.- £;-£■ Cccc':-f':ry ifrc'cye-