Project Study Report - Chapter 878 of Statutes 1987 requires that any capacity-increasing project on the state highway system, before programming the STIP (see p. 13), have a completed PSR. The PSR must include a detailed description of the project scope and estimated costs. The intent of this legislation was to improve the accuracy of the schedule and costs shown in the STIP, and thus improve the overall accuracy of the estimates of STIP delivery and costs.