Traffic Engineering Projects

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Drive assisted PennDOT District 6-0 and the Delaware Valley Regional Planning Commission (DVRPC) with the development of optimized traffic signal timing plans for multiple corridors throughout the region. The team provided extensive coordination with corridor stakeholders, collected traffic operations data, analyzed the data, developed traffic models to estimate optimized traffic signal timing plans, implemented the optimized traffic signal timing plans, and field verified that the optimized plans allow for best traffic operations based on actual field conditions after implementation. 

Drive provided traffic engineering design services associated with the development of the 14-acre University City High School and 1-acre 3675 Market Street sites. The project warranted the installation of two traffic signals and the retiming of an additional seven traffic signals. Design responsibilities included development of a traffic impact study; traffic data collection; trip generation; traffic capacity analysis for existing, interim and build scenarios; traffic signal warrant analysis; turning lane warrant analysis; traffic signal plan design; ADA ramp design; and highway occupancy permit submittals to PennDOT District 6-0 and the City of Philadelphia.

As part of the three Traffic Operations and Intelligent Transportation Systems (TOITS) Services agreements, Drive was responsible for designing the reconstruction of two corridors (three construction sections) along Bustleton Ave and Woodland Ave in the City of Philadelphia. Specifically, Drive designed a comprehensive ITS network and supported the traffic signal design upgrades for these corridors, including the Systems Engineering documents. This project upgraded more than 75 traffic signals that were converted from electromechanical controllers to fiber based IP traffic signal controllers with Transit Signal Priority and Video Detection capabilities.

Drive completed before and after studies and supported the development of optimized traffic signal timings for various key corridors throughout the City of Philadelphia. As part of this retiming innitiative, baseline trafic volumes and travel times were collected and used to build Synchro models to obtain optimized and coordinated traffic signal timing plans. The existing or baseline field conditions were documented in a before study focusing on vehicular travel times, delay, and Level of Service (LOS). 

Drive was responsible for the balancing of traffic data; calculations of vehicular change and clearance intervals, pedestrian clearance intervals, and left-turn conflict factors; and modifications of capacity analyses in Synchro/SimTraffic for the retiming of various corridors in the City of Pittsburgh and in the ten southwestern counties of the Commonwealth.

Drive provided traffic engineering services associated with the reconstruction of the SR 022/US 0030 Interchange in Lancaster, PA. Services included traffic data collection and processing, traffic modelling, traffic analyses, development of preliminary signing & pavement marking design plans and preliminary engineering cost estimates. Traffic modelling and analysis included generating Vissim models to determine potential traffic related impacts associated with various potential interchange configurations that could be constructed based on a feasibility analysis. The results of the traffic analyses were used to develop recommendations for the ultimate interchange configuration along with the signing and pavement marking design associated with the construction of the new interchange.