They are costlier to maintain compared to short counts and are set up in different regions throughout the state to get as much variety in the traffic data collected via continuous counts as possible but provide far more accurate and detailed data compared to short counts. Continuous counts are designed to collect traffic counts 24 hours a day, seven days a week, for all 365 days in a year.Short counts are the most common as they are easy to set up and cheap to maintain but only collect snippets (generally over a 48-hour period) of traffic moving through a designated location (where the station is set up).There are two primary types of traffic counts that are used by MDOT: short counts and continuous counts. MDOT collects traffic data, in the form of traffic counts, on all trunkline (federal-aid) roads and works with individual local agencies (cities/villages, counties, metropolitan planning organizations, and regional planning agencies) to collect traffic data for non-trunkline roads via the Non-Trunkline Federal Aid Road Program (NTFA).Average annual daily traffic maps ( AADT Maps) - Traffic segment-based source of AADT and CAADT for both Trunkline and Non-Trunkline roads.MS2 Help Guide - longer, more complete help guide.Basics of Navigating TDMS - short, simple help guide.Transportation Data Management System ( TDMS) - Provides up-to-date traffic monitoring data by traffic count station. Resources of Traffic Monitoring Data in Michigan
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