by Ben Chen, PE, PTOE
Do you know where your traffic signs are? City of Cranston in Rhode Island was surprised by the answer. It turned out that almost 25% of the 2,600 stop signs in the city are not accounted for or authorized by the city. The mishap caused a great deal of legal troubles. Read the full story in the New York Times:
by Ben Chen, PE, PTOE
Congestion management and performance measurements are two of the primary functions for a transportation agency. A key to understanding both is travel time data. Possible uses of travel time data include:
Travel time data can be obtained using various methods. A traditional method is to conduct travel time runs by probe vehicles equipped with GPS units. Second by second raw GPS data (vehicle speed and latitude/longitude position) are collected and compiled to obtain travel time statistics. A more cost effective method is now available to purchase a massive amount of travel time data or even raw GPS data from commercial vendors such as INRIX and TomTom.
MS2 News