Request for Letters of Interest - Model Update: Forums: RFP postings The Piedmont Authority for Regional Transportation has released the attached Request for Letters of Interest. Letters of interest are due electronically no later than 4:00 pm on June 19, 2023. The purpose of this project is to update the existing official version of the Piedmont Triad Regional Model (PTRM) v5.2 using the latest available data, such as household travel survey… https://tmip.org/content/request-letters-interest-model-update-0?utm_source=dlvr.it #tmip