Studies

Fruitvale Transit Village Design ( Transit Village )
 Dowling Associates conducted the traffic analysis as part of the design for narrowing East 12th Street between Fruitvale and 37 Avenues for the Fruitvale Transit Village project. The analysis included AM and PM peak hour intersection analysis using TRAFFIX as well as a queue analysis using synchro for the intersections of East 12th Street and 37 Avenue and International Boulevard and 35th Avenue.
E 12th San Leandro Realignment ( Transit Village )


Dowling Associates analyzed seven alternatives for the realignment of East 12th Street to San Leandro Street in Oakland, CA. The future AM and PM peak hour analyses were conducted assuming the development of the Fruitvale Transit Village at the Fruitvale BART station. Six intersections along Fruitvale Avenue and San Leandro Street were analyzed. The analysis was conducted using the Synchro software package. Signal timings were optimized and minimum pedestrian crossing times were reflected in the analysis. A simulation was conducted using CORSIM.

 
Walnut Creek General Plan Circulation Element ( General Plan )
 Dowling Associates, Inc. has been retained by the City of Walnut Creek to update the City's General Plan Transportation Element. The project includes review and update of goals, policies and action programs and a program EIR on the approved Element. The basic components of the project are: 1) review of the existing element, 2) development of background (existing conditions) report, 3) the evaluation of alternatives, and 4) the development of the element and EIR. The work will use the new Contra Costa Transportation Authority travel demand (Transcad) model to forecast future traffic impacts. Three land use alternatives will be evaluated as part of the EIR process. The Transportation Element is intended to include policies and action programs associated with street classifications, street treatments for slow downtown commercial streets, traffic calming and reductions in cut-through traffic. Further, the Element will address bicycle and pedestrian policies and programs. Finally, parking demand and policies will be included. Dowling Associates, Inc. has suggested that the Element also include criteria for addressing traffic, parking and TDM impacts as part of the normal environmental review of individual projects which may or may not be consistent with the adopted General Plan.
Oakland Downtown Transportation and Parking Plan ( Parking )


The Downtown Transportation and Parking Plan includes recommended strategies to improve traffic, transit, bicycle and pedestrian circulation as well as parking in the downtown area, from I-980 to Lake Merritt from the Estuary to I-580. The initial efforts were to assemble existing reports, studies, and data to determine data gaps and additional data collection needs. A comprehensive single-source baseline of information was developed for the study as well as for other transportation and environmental studies in the downtown. The transportation and parking needs were evaluated and impacts of future development were determined. This impact and needs assessment served as the basis for the development of strategies and improvements that were ultimately recommended in the final plan.The transportation analysis included traffic, transit, bicycle, and pedestrian impacts. Collision data for vehicles, bicyclists, and pedestrians were reviewed and summarized. The study involved close coordination with City staff and presentations to a Technical Advisory Committee, who reviewed the working technical memoranda.
Windemere Ranch, Phase 3-5, Traffic Impact Study (Traffic Impact Analysis, Site Plan Review)

 

Dowling Associates conducted a traffic impact study of the 604 acre, 2,490 residential dwelling unit
Windemere Ranch Phases 3-5 project outside of San Ramon in Contra Costa County. The project included 2 elementary schools, a middle school, and a high school. Our analysis included on-site circulation and off-site traffic impacts and mitigations for 40 study intersections in Contra Costa County, San Ramon, Danville, and Dublin. The Tri-Valley EMME2 travel demand model was used for the cumulative background forecast. The model was updated to the 2025 land uses and network from the CCTA TransCAD model. The CCTALOS method was used to compute intersection level of service impacts.
State Route 238 Corridor Improvement Widening Study (Microsimulation, Traffic Operations Analysis)
As a subconsultant to Mark Thomas Company, Dowling Associates is preparing the travel forecasts, traffic operations studies, and congestion management alternatives analyses for the State Route 238 Corridor Improvement Project. Dowling has integrated the city travel demand model (EMME/2) with a signal operations optimization tool (Synchro), a traffic level of service analysis tool (TRAFFIX™), and a traffic microsimulation tool (VISSIM). Twenty-six signalized and unsignalized intersections were analyzed in this 5-mile longconventional state highway corridor. Signal timing strategies were developed by Dowling to address 2025 no-project and project congestion levels. The impacts of an overpass at the five-legged intersection of Mission/Jackson/Foothill were analyzed in terms of impacts on mean intersection delay, mean travel times between critical points in the corridor, total vehicle-hours of delay, level of service, transit service impacts, and bicycle and pedestrian accessibility impacts. Reduced project alternatives and variations were analyzed as well. Dowling worked with city staff and an appointed citizen’s working group to explain the traffic analysis tools and assumptions, develop project alternatives and refinements, and present the results of the alternatives analyses.