Computer Simulation Model: Construction Analysis for Pavement Rehabilitation Strategies

Life cycle energy consumption and GHG emission from pavement rehabilitation with different rolling resistance

“…The first step is to simulate the construction schedule and equipment activities. The model Construction Analysis for Pavement Rehabilitation Strategies (CA4PRS) was employed to do this (Lee and Ibbs, 2005). CA4PRS is designed to predict the maximum distance of highway that can be rehabilitated during a time window, given various controlling parameters such as pavement structure design, lane closure tactics, or resource availability.…”

Incorporating Road User Costs into Integrated Life-Cycle Cost Analyses for Infrastructure Sustainability: A Case Study on Sr-91 Corridor Improvement Project (Ca)

“…Schedule-Traffic-Cost Estimate Tool: CA4PRS Software CA4PRS is an integration tool for work-zone analysis with schedule analysis, RUC calculation and agency costs estimating that helps planners and designers select effective and economical highway construction strategies [36] (CA4PRS was developed by the Institute of Transportation Studies at the University of California at Berkeley, headquartered in Berkeley, California, USA, under an FHWA pooled-fund). The software's Schedule module estimates highway project duration, incorporating alternative strategies for pavement design, lane-closure tactics and contractor logistics with their resource mobilization constraints.…”

“…With all the main RUC programs having an equal valuation, the researchers chose to incorporate CA4PRS as the FHWA and AASHTO endorsed it as a priority, market-ready technology ready for nationwide deployment and also the International Read Federation granted 2007 Global Road Achievement to CA4PRS [38]. It has been used to minimize total construction costs for urban freeway reconstruction [36], aided integration analysis, (i.e., lane closure scheduling analysis + work-zone RUC calculation +Agency costs estimate) in an accelerated urban highway rehabilitation project [39] and has been validated through several major highway rehabilitation projects in several states including California, Washington and Minnesota [38].…”

Quantitative model for determining incentive/disincentive amounts through schedule simulations

“…The software has three main functions to estimate schedule, cost, and work zone. CA4PRS ¶V schedule analysis estimates the duration of highway rehabilitation project in terms of total number of closures (Lee and Ibbs 2005). CA4PRS ¶V work zone analysis quantifies the impact of construction work zone closures on the traveling public in terms of road user cost and time spent in queue (Lee et al 2008).…”

“…Determine the unit price ($/hour) of all resources used; 4. &DOFXODWH FRQWUDFWRUV ¶ DGGLWLRQDO FRVWV using Equation (2) (Lee and Ibbs 2005), these four factors were taken into account in the schedule simulations using CA4PRS. Each strategy shown in Table 1 is based on actual I/D projects where project scope (lane-miles to be rebuilt) and project size (original contract amount) were similar.…”