New TRB how-to guide to improve travel time reliability
The Transportation Research Board has produced a new report, Cost effective performance measures for travel time delay, variation and reliability with application and implications for winter roadway operations. NCHRP Report 618 argues that highway
system users-the traveling public, as well as commercial operators-are increasingly sensitive to delay and unreliable conditions. By measuring travel-time performance, and related system metrics based on travel time, agencies will be better able to plan and operate their systems to achieve the best result for a given level of investment. At the same time, travelers, shippers, and other users of those systems will have better information for planning their use of the system.
In winter storms, agencies meet their "customers'" concerns for delay and reliability through salting and plowing. Measuring road surface outcomes is the key to delivering on customer expectations.
Report 618 guides agencies to using cost-effective techniques to gather and process data enabling real-time management decisions which can significantly improve winter roadway safety.
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