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50 GLOSSARY OF TERMS AND ACRONYMS ACID Accident and Incident Tracking System ADA Americans with Disabilities Act APC automated passenger counting APTS Advanced Public Transportation Systems AVL automatic vehicle location BTS Bureau of Transportation Statistics BUDS BDS Display System CAD computer-aided dispatch CTA Chicago Transit Authority CUTR Center for Urban Transportation Research DBMS database management system DGN Design File DIME Dual Independent Mapping Encoding DOT Department of Transportation FTE full-time equivalent GDF Geographic Data File GIS Geographic Information System GIS-T Geospatial Information Systems for Transportation GML Geographic Markup Language GOS Geospatial One-Stop GPS global positioning system IMS Internet Map Server ISO International Standards Organization ISTEA Intermodal Surface Transportation Efficiency Act of 1991 IT information technology ITE Institute of Transportation Engineers ITS intelligent transportation systems LIDAR Light Detection and Ranging LRS linear referencing system MDT MiamiâDade Transit MFS Map Feature Standard MPO metropolitan planning organization NCGIA National Center for Geographic Information and Analysis NEMA National Electronic Manufacturers Association NSDI National Spatial Data Infrastructure NTCIP National Transportation Communication for ITS Profile OCTA Orange County Transportation Authority OGC Open GIS Consortium ROMANSE Road Management System for Europe RTD Regional Transit Database RTIS Regional Transit Information System SAE Society for Automotive Engineers SAM Stops and Amenities Maintenance SDE spatial data engine SDO spatial data object SOAP Simple Object Access Protocol TCIP Transit Communication Interface Profile TEA-21 Transportation Equity Act for the 21st Century TED Transit Enterprise Database TIGER Topologically Integrated and Geographic Encoded Reference System TNET Transportation Network TOP Transit Operations Toolbox TransFM Transit Feature Management TRUST TRANSMODEL Users Support Team UNETRANS Unified Transportation and Network System WFS Web Feature Standard XML Extensible Markup Language