Work zone traffic analysis & impact assessment.
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2014-01-01
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Abstract:This report documents the final results and project summary of NCDOT research project 2012‐36: Work Zone Traffic ; Analysis & Impact Assessment. The project is tasked with assessing the estimated impact of proposed NCDOT TIP ; Project I‐5311/I‐5338, which is a pavement rehabilitation project on interstates I‐40 and I‐440 from Exit 293 to I‐40 ; Exit 301 and I‐440 Exit 14. The project aims to predict the network‐wide impacts of this work zone during ; construction. The primary focus in the project and in this report is the development and calibration of a network‐ ; wide mesoscopic simulation model of the Triangle region using the DynusT and DTALite software tools, as well as a ; macroscopic evaluation in the FREEVAL tool. The geometric extents of the model cover the entire triangle region, ; with expansion to the east of the triangle to include additional sections of US264, I‐40, and I‐95. The model has been ; calibrated using field‐estimated spot volume and speed data, as well as key route travel times obtained from INRIX. ; A variety of work zone scenarios were modeled to test the relative impacts of different lane closure configurations ; on route and network performance. The analysis further differentiates between no‐diversion and with‐diversion, ; where the latter relies on twenty iterations of a dynamic traffic assignment utility, which diverts traffic in an effort to ; minimize overall network travel time.
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Main Document Checksum:urn:sha-512:ec8e1c0522fcbf2a0fba93ee5884fef49d15da7c194705c780637bab70d71b7b6c3c6d49ef898390541820d84f6317f9c6f49bf9ecb0e2d84a7650b9faf2d1b4