Development of A Traffic Monitoring Program Using Emme 3 Based on A San Joaquin COG Travel Demand Model

Jia Hao Wu, Ph.D., Joy Bhattacharya, P.E. and Chris Kinzel. P.E. TJKM Transportation Consultants, Pleasanton, California, USA

20th International Emme Users’ Conference

Montreal, October 18 to 20, 2006

OutlineCity of Lathrop BackgroundObjectivesEmme 3 ImplementationResultsConclusions

1.5 hours from San FranciscoPopulation: 12,500Buildout Population: 70,000Fastest Growing in CaliforniaMost Comprehensive EIRNew Development Pop: 50,000

New DevelopmentsRiver Islands at Lathrop

11,000 residential units 17,000 new jobs

Mossdale South and West Villages 2,500 residential units27 acres services and 1 million square feet of retail/office

Central Lathrop Specific Plan6,800 residential units4.5 million square feet of offices

We developed traffic models for all of these new developments for environment impact studies.

Traffic Monitoring ProgramDetermine the circulation needs for traffic circulation improvements Satisfy the conditions of approval for new developments Identify any intersection level of servicesDetermine mitigation measuresUpdate on an annual basisYears: 2006,2008,2010 and 2012

Level of ServiceLevel of Service (LOS) is a qualitative index of the performance of an intersection in the transportation system  LOS is based on 2000 Highway Capacity Manual published by the Transportation Research Board

We developed traffic models for all of these new developments for environment impact studies

Three Highway Interchanges

Intersection Lane Geometry – Existing (Year 2006) Conditions

Turn Volumes AM and PM – Existing (Year 2006) Conditions

Level of Service – Existing (Year 2006) Conditions

Demand Forecasting ProcessSan Joaquin Council Governments Travel Demand Forecasting Model was used in CUBE/TP+Emme 3 was used for a detailed analysis, since it was used for the model calibration at the turning movement levelTurn counts at the study intersections were entered into Emme 3 for the model calibrationThe difference method was used Road network and land use data were updated

City of Lathrop General Plan as A Background

River Island Development Plan

Dwelling Units Employments

Year 2012 Peak Hour Turning Movement Volumes

Lane Geometry

Recommended Roadway Phasing

RecommendationsRecommendations for Existing Conditions Recommendations for 2008 (Two-year look) Recommendations for 2010 (Four-year look)Recommendations for 2012 (Six-year look)

Conclusions

Emme 3 was used for the monitoring programs Worked with SynchroA wish list for display results in Emme 3 with many symbols and LOS