TxDOT Reference Markers

A statewide point dataset of Texas Reference Marker locations maintained by the Transportation Planning and Programming Division of TxDOT. Reference Markers are extracted from the Geospatial Roadway Inventory Database (GRID), where they are maintained as an asset. Reference Markers are located along all on-system (i.e. state maintained) Texas roadways at 2-mile intervals, with the exception of interstate highways, which have markers at 1-mile intervals. Reference markers are used as a linear referencing system for project planning, asset management, and as a location reference in the field. Update Frequency: 1 Months Source: Geospatial Roadway Inventory Database (GRID) Security Level: Public Owned by TxDOT: True Related Links Data Dictionary PDF [Generated 2025/04/24]由德克萨斯州运输部（Texas Department of Transportation, TxDOT）交通规划与项目分部维护的覆盖德克萨斯州全域的参考标记（Reference Markers）点位点数据集；参考标记从地理空间道路库存数据库（Geospatial Roadway Inventory Database, GRID）中提取，并作为资产在该库中进行维护；参考标记沿德克萨斯州所有纳入州管体系（即由州政府维护）的道路布设，布设间隔为2英里，州际高速公路除外，其标记布设间隔为1英里；参考标记可用作项目规划、资产管理的线性参考系统，同时可作为野外作业的位置参照依据；更新频率：1个月；数据源：地理空间道路库存数据库（GRID）；安全等级：公开；所有权归属：德克萨斯州运输部（TxDOT）；相关链接：数据字典PDF [生成于2025/04/24]