ADOT 2024 Junctions and Junction Legs

Junctions are locations of at-grade intersections, restricted crossovers on divided highways, and termini points for specific routes. The junction layer is used when identifying the number and type of intersection signals or stop signs as part of the Highway Performance Monitoring System (HPMS) federal report submittal (refer to the HPMS field manual, items 31-33). Junctions are also used in statewide safety scoring and have been adjusted for MIRE requirements. Junction legs are 150 foot linear segments, or legs, on either side of a junction. They are used to support traffic safety analysis. Reported Extent: Junctions exist on all paved public roads where an at-grade junction/intersection exists. Junction legs are generally created anywhere at-grade junctions exist. While they have been created on all ADOT-owned roads, they may not be as prevalent on locally-owned roads.道路交叉口节点（Junctions）指平面交叉路口（at-grade intersections）、分隔式公路上的受限穿越道口，以及特定线路的终点点位。 该交叉口节点图层用于在提交公路性能监测系统（Highway Performance Monitoring System）联邦报告时，识别交叉路口信号或停车让行标志的数量与类型（详见HPMS现场手册第31-33项）。此外，交叉口节点也应用于全州交通安全评分工作，并已针对MIRE要求完成适配调整。 交叉口支段（Junction legs）指位于交叉口节点两侧的150英尺线性路段，用于支撑交通安全分析工作。 报告覆盖范围：所有存在平面交叉路口的铺装公共道路均设有交叉口节点；交叉口支段通常在所有平面交叉路口处生成。尽管该图层已在亚利桑那州交通局（ADOT）管辖的全部道路上完成创建，但在地方管辖道路上的覆盖度可能相对有限。