George P. Doyle, IV

Wilburn Engineering

Transportation Operational Analysis, Baker Street Road Conversion – Atlanta, GA (Completed 2019)

Conducted an operational analysis of Baker Street, a major collector road between Marietta Street and Piedmont Avenue in Downtown Atlanta, to evaluate the traffic and safety-related impacts associated with the proposed conversion of Baker Street from one-way to two-way operation. A detailed inventory of current conditions was conducted on the study corridor as well as crash history along the corridor. Additionally, an evaluation of existing and projected access control parameters was conducted at and around the study area to determine which surrounding intersections would be impacted from the Business Districts (BD) and the Entertainment Districts (ED) in Downtown Atlanta in both these scenarios. Baker Street was evaluated under two future scenarios: No-Build (remaining as one-way operation) and Build (converting to two-way operation). Additional research was conducted to evaluate the advantages and disadvantages to one-way and two-way systems based on publicly published research on roadway conversions. Based on these findings, the City of Atlanta should evaluate how proposed roadway conversions like this will impact the downtown Central Business District (CBD). Impacts such as downtown grid connectivity, and any affects they may have to ramp accessibility on and off the Interstate Connector, should be evaluated in studies to follow this one.

Traffic Impact Study, N Henry Boulevard – Stockbridge, GA (Completed 2019)

Conducted a traffic impact study for related impacts expected to occur from the development of a 3500-seated Amphitheater between East Atlanta Road and North Lee Street. An investigation of existing parking facilities within the study area was conducted, in addition to an extended trip distribution of inbound and outbound traffic over the course of seven hours for events. Existing and projected traffic volumes within the study area proposed signal modification plans for study intersections along North Henry Boulevard (SR 138), so an Intersection Control Evaluation (ICE) was implemented. Projected traffic control modifications were based on existing turning volumes, assumed traffic flow patterns to and from the site for events, and limited right-of-way.  

Intersection Control Evaluation (ICE), SR 9 – Dawson County, GA (Completed 2019)

Conducted a traffic impact study for a Dawsonville Development along Perimeter Road, between SR 9 and SR 53, using GDOT Policies and Procedures. The proposed development is expected to generate a total of 1070 daily trips. The study analyzed alternate design controls for the study intersections, evaluated capacity analysis for existing and projected traffic conditions as well as any storage lane lengths needed. Projected traffic control analyses were based on the operational efficiencies of stop control and roundabout alternates, as well as historic crash data parameters.

Traffic Impact Study, N Druid Hills Road – Dekalb County, GA (Completed 2019)

Conducted a traffic impact study for related impacts expected to occur from the Peachtree Creek Greenway. The project proposed signal modification plans for the intersection of North Druid Hills Road and West Druid Hills Drive. This intersection is planned to grant parking access for vehicle passengers who will utilize the 12-mile long Greenway throughout Brookhaven, Georgia. The study evaluated capacity analysis for existing and projected traffic conditions as well as any traffic signal modifications needed. Projected traffic control modifications were based on generated traffic, sight distance parameters, and lane geometry constraints.

Intersection Control Evaluation (ICE), SR 124 – Jackson County, GA (Completed 2019)

Conducted a corridor study for SR 124 from SR 60 to Boone Road for the proposed Bentwater Development using GDOT Policies and Procedures. The proposed development is expected to generate a total of 1813 daily trips. The study analyzed alternate design controls for the study intersections, evaluated capacity analysis for existing and projected traffic conditions as well as storage lane lengths as needed. Projected traffic control analyses were based on operational efficiency and historic crash data parameters.

Speed Study, Multiple Corridors in the City of Cornelia – Habersham County, GA (Completed 2019)

Conducted a traffic operation study on thirteen different corridors for the City of Cornelia that focused on existing speeds, traffic controls, and safety parameters. Policies and Procedures from AASHTO, FHWA, MUTCD, and GDOT were used to evaluate and compare existing roadway conditions to state and national standards. Those existing parameters that were evaluated include a collection of data for roadway grades, lane widths, posted signage, horizontal and vertical curvature, and sight distances. The study identified inadequate lane widths that do not meet AASHTO standards, posted speed limits and roadway alignments that do not meet FHWA standards, posted traffic control signs that do not meet MUTCD standards, and sight distance issues for two-way stop-controlled intersections.

Traffic Impact Study, SR 120 at Old Griffin Road – Paulding County, GA (Completed 2019)

Developed technical memorandums to the results published in the initial traffic impact study for the COSTCO Wholesale Development, submitted October 23, 2018. Memorandums made to the initial study incorporate multiple development scenarios made to existing Land Tracts VI, VII and the Harlow Brown Property that are expected to convert from PRD zoning to B-2 zoning. These scenarios involved developing a total of 32 acres in to mixed-use land purposes and evaluating their trip generation impacts to the proposed COSTCO driveway if a backage road were to connect COSTCO’s driveway with this acreage.

Intersection Operational Analysis, Peachtree Dunwoody Road at Windsor Parkway – Sandy Springs, GA (Completed 2019)

Developed technical memorandums to the results published in the initial traffic engineering study, submitted September 25, 2018. Technical memorandums made to the initial study incorporate multiple capacity analysis result scenarios in revision to the previously submitted results. Results and queue length figures were produced for the prime consultant, which were used to address the local community of the findings in their Public Information Open House (PIOH).

Intersection Control Evaluation (ICE), SR 124 – Gwinnett County, GA (Completed 2019)

Conducted a corridor study for SR 124 from Pine Road to Spout Springs Road (P.I. F-0835-01) using GDOT Policies and Procedures. The SR 124 corridor was analyzed as a widening project, expanding from a two-lane bi-directional highway to a four-lane bi-directional highway in the Braselton area. The study analyzed access controls along the corridor, performed signal warrant analysis at 2 intersections, analyzed traffic diversions from 2 intersections, analyzed traffic operations at the surrounding intersections, evaluated capacity analysis for existing and projected traffic conditions as well as design improvement options at specific intersections. Projected volumes were based on census data and historic traffic counts, while traffic control analyses were based on operational efficiency and historic crash data parameters.

Intersection Operational Study, Ridge Avenue at Cloud Street – Stone Mountain, GA (Completed 2019)

Conducted a traffic control study for a two-way stop control (TWSC) intersection to see whether all-way stop control (AWSC) is warranted or not. Additionally, sight distance evaluation was conducted as well as crash history analysis to determine if existing safety parameters need mitigated or not. Results concluded AWSC is not warranted based on traffic volumes, and sight distance evaluation concluded the leveling of grounds and clearing of tree lines is needed at the side street approaches to this intersection.

Transportation Operational Analysis, Northgate Middle School – Coweta County, GA (Completed 2019)

Assisted in developing a report for the Coweta County School System to determine the benefits to building a new middle school, Northgate, in the northeast corner of the county. Analyses in this report included travel time saved for vehicular traffic to and from the new school from redistricted neighborhoods, the annually saved capital for school commuters if the school is built, and the capacity analysis for each corridor associated to this new service area.

Plan Development Process (PDP) Corridor Studies: P.I. 0018266, P.I. 0018267, & P.I. 0018268 – Augusta, GA (Completed 2018)

Conducted individual transportation analysis studies for Robert C Daniel, Jr Parkway (P.I. 0018266), Wheeler Road (P.I. 0018267), and Barton Chapel Road (P.I. 0018268) in Richmond County. These studies followed the GDOT plan development process (PDP). Each study analyzed the capacity analysis for each corridor, evaluated improvement options using the GDOT ICE and Roundabout tools, and recommended geometric and traffic control improvements at multiple intersections along each corridor.

Development of Regional Impact (DRI 2821), Selig Development – Atlanta, GA (Completed 2018)

Expanded upon an existing Traffic Impact Study for this new Midtown Development, originally submitted on March 3, 2018. DRI 2821 evaluated the same study area with different traffic impact scenarios which incorporated multi-modal facility analyses. Pedestrian, Bicycle, Transit, and Vehicular facilities were analyzed as sub-system parts to the proposed development that is expected to generate 4,120 daily trips. These facilities were evaluated for their operational headways and Levels of Service under existing and projected conditions. Additionally, capital projects planned and underway for the City of Atlanta were incorporated into the DRI in conjunction with the Atlanta Regional Commission’s Unified Growth Map. The DRI concluded limited access control entering and exiting the site from adjacent streets needs to occur, along with transit incentive programs to reduce vehicular traffic around the site.

Traffic Impact Study, Suwanee Dam Road at Delay Lane – Suwannee, GA (Completed 2018)

Assisted in the analysis of an intersection improvement, where a new public park will cause existing traffic patterns to be rerouted to other surrounding intersections; conducted sight distance analysis, performed capacity analysis.

Traffic Impact Study, North Miller Street at Golden Isles Parkway – Hazlehurst, GA (Completed 2018)

Conducted an impact study for the development of a new Popeyes facility; analyzed existing conditions and concept plan improvements at the study intersection; recommended driveway location improvements for the drafted plans based on GDOT standards; performed capacity analysis; recommended the extension of northbound and southbound turning lanes at the newly signalized study intersection, recommended a revision of the Gordon Isles Parkway driveway into the development as a RIRO for safety considerations,  recommended the North Miller Street driveway into the development as a full access driveway.

Traffic Impact Study, Montreal Road at Clarkston Industrial Blvd – Clarkston, GA (Completed 2018)

Conducted an impact study for the development of the new Starnes Senior Living facility based on traffic trends for a similar and existing senior living development, The Reserve at Mills Creek; conducted sight distance analysis, performed capacity analysis, and recommended two-way side street stop control.

Crosswalk Study, South Main Street at Foreacre Street – Cornelia, GA (Completed 2018)

Conducted a study at this near downtown intersection to see if existing and projected conditions warrant the striping of a crosswalk at this intersection; analyzed options based on GDOT guidelines for crosswalks and recommended to install crosswalk markings across Foreacre Street but not to install crosswalk markings across Main Street.

Traffic Impact Study, New Northgate Middle School – Newnan, GA (Completed 2018)

Conducted a traffic study for the development of a new middle school in Coweta County; investigated how trip generation and trip assignment to and from the new school would develop based on census data; conducted sight distance analysis; performed two capacity analysis scenarios, one with the development of a connector road between Northgate High School and the new middle school and one without a connector; conducted roundabout analysis for the study intersection.

Traffic Signal Warrant, West Washington Street at Brown Street – Newnan, GA (Completed 2018)

Conducted a signal warrant analysis at this near downtown intersection; conducted sight distance analysis, performed capacity analysis, evaluated improvement options, and recommended geometric and traffic control improvements at this intersection.

Corridor Study, Richard B Russell Parkway – Warner Robins, GA (Completed 2018)

Conducted a traffic study for the Russell Parkway Corridor from US-41 to South Houston Lake Road; analyzed access control along the corridor, performed signal warrant analysis at 2 intersections, analyzed traffic diversions from 1 warranted signal, analyzed traffic operations at the surrounding intersections, developed generated volumes for a 65-acre land development, evaluated capacity analysis for diverted traffic conditions as well as 10-year and 20-year planning horizon conditions, evaluated improvement options, and recommended geometric and traffic control improvements at 2 intersections along the corridor and 3 intersections adjacent to the corridor.

Traffic Signal Warrant, East Washington Street at Murray Street – Newnan, GA (Completed 2018)

Conducted a signal warrant analysis at this downtown intersection; conducted sight distance analysis, developed traffic projections, performed capacity analysis, evaluated improvement options, and recommended geometric and traffic control improvements at this intersection.

Traffic Signal and Timing Study, SR 34 at White Oak Drive – Newnan, GA (Completed 2018)

Conducted a traffic study in conjunction with GDOT Policy 6785-2; analyzed crash data, developed traffic projections, analyzed left-turn phasing options, performed capacity analysis, evaluated improvement options, and recommended geometric and traffic control improvements at this intersection.

Traffic Impact Study, Midtown Selig Development – Atlanta, GA (Completed 2018)

Completed an impact study for a 252,000 square-foot mixed-use development in Midtown Atlanta, Georgia; developed generated volumes, analyzed traffic operations at the surrounding intersections, recommended geometric and traffic control improvements within the study area, concluded the need for a development of regional impact study to be done for this planned development.

Plan Development Process (PDP) Corridor Widening for SR 920 – Fayette and Clayton Counties, GA (Completed 2018)

Assisted in the traffic study for SR 920 in Fayette and Clayton Counties; analyzing road networks for existing, no-build, and build AADTs and DHVs at 42 intersections along the corridor.