Project title: Guidelines for best use of video detection for stop bar presence detection

PDFTech Report0-6030-P1Video imaging detectorsIntersectionsRegulatory signsRoad markingsTexasTexas Transportation InstituteMiddleton, DanLongmire, RyanCharara, HassanTexas Transportation InstituteTexas. Dept. of TransportationUnited States. Federal Highway AdministrationNTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLSNTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Control DevicesNTL-SAFETY AND SECURITY-Highway SafetyUS Transportation CollectionThe objective of this activity was to record video that could be used for controlledevaluation of video image vehicle detection system (VIVDS) products and software upgrades toexisting products based on a list of conditions that might be difficult to find in a timely manner.This library allows the user to present a wide range of weather, roadway, and lighting conditionsto a VIVDS product in real time. The idea involves capturing the video and playing the recordedvideo through a VIVDS processor to determine the accuracy or change in accuracy to compareagainst a test protocol and/or verify claims of manufacturers. The test conditions includesituations that are not easily obtainable and that might be particularly challenging for currentdetectors.This research task anticipates that TxDOT will encounter situations fairly often in whichthe desired conditions for full-scale field testing of VIVDS are not available or where quickturnaround tests are needed. There may be a need for a quick decision on a firmware upgrade oron a new product to establish at least an initial and preliminary basis for forming a decision onsuccess or failure. There will probably be occasions where these initial results using the videolibrary need to be verified by field testing if the desired conditions become available or if timeand other resources allow such testing. TxDOT might want to establish a formal policy for theuse of the library and conditions in which field testing might be desirable