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Download as PDF; Printable version; ... Highway Performance Monitoring System, an annual report sent by each U.S. state's DOT to the FHWA; See also
The FHWA Traffic Monitoring Guide [7] recommends performing a short count on a road segment at a minimum of every three years. There are many methods used to calculate an AADT from a short-term count, but most methods attempt to remove seasonal and day-of-week biases during the collection period by applying factors created from associated ...
Long-Term Pavement Performance Program, known as LTPP, is a research project supported by Federal Highway Administration (FHWA) to collect and analyze pavement data in the United States and Canada. Currently, the LTPP acquires the largest road performance database.
The use of the K30 standard is mandated for the Highway Performance Monitoring System's comparisons of congestion. The K Factor also helps calculate the peak-to-daily ratio of traffic. K30 helps maintain a healthy volume to capacity ratio. [3] K50 and K100 will sometimes be seen.
The FHWA's role in the Federal-aid Highway Program is to oversee federal funds to build and maintain the National Highway System (primarily Interstate highways, U.S. highways and most state highways). This funding mostly comes from the federal gasoline tax and mostly goes to state departments of transportation. [7]
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The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section.The PCI is widely used in transportation civil engineering [1] and asset management, and many municipalities use it to measure the performance of their road infrastructure and their levels of service. [2]
The latest edition incorporates the latest research on highway capacity, quality of service, active traffic and demand management, and travel time reliability. [2] The Sixth Edition of HCM consists of four Volumes. Three volumes are available either in hard copy or PDF, whereas Volume IV is only available online.