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PT Engineering provides consulting service packs that allow other private engineering firms to utilize PT Engineering’s experience in traffic simulation. PT engineering provides technical services, process development, quality control and utility development services to multiple clients through an as-needed contract. To date, PT Engineering has provided over 200 hours of services under their Service Pack agreements.
TM Reviews 20-21
PT Engineering, under an on-call contract to the NCDOT Congestion Management Section, is providing NCDOT with review services of TransModeler simulation projects for projects being developed for State Transportation Improvement Projects (STIP). Reviews for a total of 2 STIP projects have been completed under this contract, to date.
OD Matrix Dev
PT Engineering was responsible for the development of the NCDOT Origin-Destination (O-D) Matrix Development Procedure that details five methods for developing O-D matrices. The procedures include step by step guidance on the process of developing O-D matrices and provides best practices for determining the appropriate method. Additionally, the following utilities were developed to assist in and standardize the development of O-D matrices:
• Corridor O-D development tool to develop OD matrix from IAU output for a corridor with up to 50 intersections
• Matrix Iteration Tool that utilizes and Iterative Proportional Fitting (IPF) function to develop O-D matrices from a seed matrix
• Origin-Destination Matrix Estimation (ODME) Link Volume Comparison Utility
The O-D Procedures also included the development of a total of 16 videos that provided two sample projects for each of the five methods. The videos, sample data sets and resources were included in the NCDOT Traffic Engineering Suite (TES).
PT Engineering was responsible for the development of a new tool for NCDOT Congestion Management that brought a series of tools together into a single location, the NCDOT Traffic Engineering Suite (TES). The TES is an Excel based file that includes pertinent information on the analysis of projects for NCDOT Congestion Management. As a part of the TES, the following new or updated tools were developed:
• NCDOT TransModeler Measures of Effectiveness Spreadsheets
• NCDOT TransModeler Measures of Effectiveness Macro
• NCDOT TransModeler Checklist
• NCDOT Intersection Analysis Utility (IAU) including separate AM/PM peak factors, quadrant and directional movements and interpolation of volumes
• NCDOT Intersection/Interchange Breakout Utility that converts standard intersection volumes to 65 different intersection or interchange configurations
Scope and Manday
NCDOT– In an effort to develop consistent analyses for Synchro, Highway Capacity Software, Sidra and TransModeler, NCDOT utilized PT Engineering to develop a standardized scope temple (one for macro level analysis and one for simulation) for all projects that broke the analysis process into defined units. Based on the scoping template, a manday estimating sheet was developed that would produce the NCDOT in-house mandays for negotiating the analysis budget.
TM Reviews 17-19
PT Engineering, under an on-call contract to the NCDOT Congestion Management Section, is providing NCDOT with review services of TransModeler simulation projects for projects being developed for State Transportation Improvement Projects (STIP). Reviews for a total of 42 STIP projects were completed under this contract.
PT Engineering was the primary developer of a training course for TransModeler and TransModeler SE for both NCDOT staff and Private Engineering Firms. The training includes a two-day classroom training course and a series of tutorial videos that provide additional modules and a reference resource for future use of the software. To date, eleven classes have been held with over 180 individuals being trained.
PT Engineering was the primary author responsible for developing guidelines for use on all simulation project undertaken by NCDOT. As part of the guideline development process, PT Engineering developed calibrated models for seven intersections throughout the state in order to determine global parameters for use in TransModeler and SimTraffic. PT Engineering was responsible for developing informational presentations to internal units of NCDOT to help familiarize them with simulation and the use of TransModeler.
PT Engineering (as a subconsultant to Kimley-Horn & associates) provided technical oversight services for a study utilizing TransModeler to model a proposed flyover from Concord Mills Boulevard to King-s Grant Pavilion at the Concord Mills Mall in Cabarrus County. PT Engineering provided both quality control and consistency reviews for the project and developed the approach for utilizing Dynamic Traffic Assignment to distribute trips to the multiple entrances to the Mall.
PT Engineering (as a subconsultant to AECOM) provided simulation analysis and oversight services for a study utilizing TransModeler along US 74 in Mecklenburg County. The first stage of the study was completed in June 2015 and included the evaluation of spot studies where the express lanes begin and end along US 74. A second study was then developed that included a full model for the study area for use in optimizing the design and operations of the U-5526 project. An additional study was then completed to evaluate the traffic operations of the planned conversion of the corridor from Wallace Lane to I-485 including the construction of both general purpose lanes and express lanes. PT Engineering was responsible for developing the technical approach for the studies and provided technical oversight throughout the development of the studies.
PT Engineering (as a subconsultant to RS&H and directly for NCDOT) provided technical oversight services for a study utilizing TransModeler along I-485 in Mecklenburg County. PT Engineering provided both quality control and consistency reviews to ensure that all of the simulation projects in the Charlotte area were being developed in a consistent manner.
PT Engineering (as a subconsultant to AECOM and directly for NCDOT) provided technical oversight and quality control services for the update to the Traffic Capacity Technical Memorandum, that includes a study area that encompasses 16 interchanges and evaluates four alternatives.