TxDOT Roadbed Width

A roadbed is the foundation or surface of a road uninterrupted by a median or shoulder on which vehicles travel at normal speeds. A roadway can have a single roadbed or multiple roadbeds. A roadway with multiple roadbeds has some form of median between the roadbeds. Roadbed Width is the measurement, in feet, of the width of the surfaced portion of a physically separate roadbed. This portion consists of the through lanes, turn lanes, parking, and surfaced shoulders. Roadbed Width = Surface Width + Shoulder Width + Turn Lanes Update Frequency: 3 Months Source: Geospatial Roadway Inventory Database (GRID) Security Level: Public Owned by TxDOT: True Related Links Data Dictionary PDF [Generated 2025/04/24]路床（roadbed）指道路中不受中央分隔带或路肩隔断的基础或行车表面，供车辆以常规速度行驶。单条道路可设置单个路床或多个路床，设置多路床的道路，其路床之间会设有各类中央分隔设施。路床宽度（Roadbed Width）指物理分隔的独立路床的铺装区域宽度，计量单位为英尺，该区域包含通行车道、转向车道、停车区域及铺装路肩。路床宽度计算公式为：路床宽度=铺装宽度+路肩宽度+转向车道宽度。更新频率：每3个月。数据来源：地理空间道路库存数据库（Geospatial Roadway Inventory Database, GRID）。安全等级：公开。权属方：得克萨斯州交通局（TxDOT），权属属实。相关链接：数据字典PDF [生成于2025年4月24日]