The objective of this project is to develop system designs for programs to monitor travel time reliability and to prepare a guidebook that practitioners and others can use to design, build, operate, and maintain such systems. This document presents the amplified work plan for the project.
This paper examines a way to synthesize route travel time probability density functions (PDFs) on the basis of segment-level PDFs. Real-world data from I-5 in Sacramento, California, are employed. The first finding is that careful filtering is required to extract useful travel times from the raw
A list of work products from SHRP 2 L02 that could be tested as part of L38. The list is organized on the basis of the nominal sequence in which the work products is or could be used in a travel time reliability monitoring system or project.
This brief three-page document provides an overview of the purpose, methodology, and deliverables of the SHRP2-L02 Project. Project L02 was conducted to create methods by which travel time reliability can be monitored, assessed, and communicated to end users of the transportation system. The proj
This document shows how the Travel Time Reliability Monitoring System (TTRMS) can be used to address questions about network reliability.
Related Artifacts: L02 - Supplement A - Monitoring System Architecture; L02 - Supplement B - Methodological Details; L02 - Supplement C - C
This presentation on Project L02 was done at the Project L38 Preliminary Meeting on August 1, 2012. It provides an overview of the main Project L02 products, especially on the guidebook that describes how to develop a travel time reliability monitoring system (TTRMS).
Presentation for SHRP 2 Joint Technical Coordinating Committee Meeting
An overview of project L02 and its findings.
This technical presentation includes instructions with screenshots for using the SHRP2-L02 Corridor-Level Queue Prediction Model ("Point Queue Model"). Based on a set of analytic equations, the model was developed to calculate the number of queued vehicles ahead of the probe vehicle and to captur
Within the second Strategic Highway Research Program (SHRP 2), Project L02 focused on creating a suite of methods by which transportation agencies could monitor and evaluate travel time reliability. Creation of the methods also produced an improved understanding of why and how travel times vary a
