Tongass National Forest Roads with Core Attributes

A route feature stores the spatial locations (geography) of the road. These feature classes have an (M) value or measure on their vertices. A route system depicts all roads within or in close proximity to an administrative unit. A road is a motor vehicle travel way over 50 inches wide, unless classified and managed as a trail. This feature is only SPATIAL ROAD DATA, other data (open, closed, jurisdiction, maintenance level) is stored in INFRA. Used to link spatial roads to INFRA data, ROAD NO., BMP, EMP and Calibration. Routed roads are a single spatial line, all have data in INFRA and this data must be attached. Routed roads need to have INFRA data table attached by use of R10 Geospatial Interface (GI) tool and Visualization named Roads with Core Attributes RSW - This creates an output roads layer and adds the following fields from the INFRA database at NITC: name, lanes, service life, system, surface type, jurisdiction, objective maintenance level, operational maintenance level, route status, functional class and primary maintainer. Routed ROADS CAN HAVE OTHER DATA TABLES ATTACHED, (R10 Stream Data Point-RSW, Road Points -RSW, Bridges-RSW, MVUM Roads and Transportation Atlas. A road may be classified or unclassified. Classified roads are roads within the National Forest System lands planned and managed for motor vehicle access including State roads, county roads, private roads, permitted roads, and Forest Service roads. Unclassified roads are roads not intended to be a part of nor managed as a part of the forests transportation system, such as temporary roads, and unplanned, unengineered, unauthorized off-road vehicle tracks and abandoned travel ways. Route measurements and route directions must correspond to those stored in the INFRA Oracle table RTE_BASICS. Associated National Application: INFRA Travel Routes. IWeb Infra Roads webpage http://basenet.fs.fed.us/support/help/roads/. All routed roads are required to have data in INFRA and all roads having data in INFRA are required to be routed.路径要素（route feature）用于存储道路的空间位置与地理信息，此类要素类（feature classes）的顶点包含M值（测量值）。道路系统（route system）用于描绘行政辖区内或毗邻区域的全部道路。道路指宽度超过50英寸的机动车通行道路，除非被分类为步道并按步道进行管理。本数据集仅包含空间道路数据（SPATIAL ROAD DATA），其余数据（如通行状态、封闭状态、管辖权限、养护等级等）均存储于INFRA数据库中，本数据用于将空间道路与INFRA数据相关联，关联字段包括道路编号（ROAD NO.）、起始桩点（BMP）、终止桩点（EMP）以及校准信息。路由道路（routed roads）为单一空间线要素，所有此类道路均需关联INFRA数据库中的数据。需通过R10地理空间接口（R10 Geospatial Interface, GI）工具与名为“带核心属性道路（Roads with Core Attributes，RSW）”的可视化工具，将INFRA数据表关联至路由道路，该流程将生成输出道路图层，并从NITC的INFRA数据库中添加以下字段：道路名称、车道数、使用寿命、道路系统类型、路面类型、管辖权限、目标养护等级、运行养护等级、道路状态、功能等级以及主要养护单位。路由道路还可关联其他数据表，包括R10溪流数据点-RSW、道路点位-RSW、桥梁-RSW、MVUM道路与交通图集（MVUM Roads and Transportation Atlas）。道路可分为已分类道路与未分类道路：已分类道路指纳入国家森林系统用地规划、用于机动车通行并按此管理的道路，包括州道、县道、私人道路、许可道路以及林务局道路；未分类道路指未纳入森林交通系统规划或管理的道路，例如临时道路、未规划、未工程化且未经许可的越野车道，以及废弃通行道路。道路测量值与道路方向必须与INFRA的Oracle数据表RTE_BASICS中存储的内容保持一致。关联的国家级应用为INFRA出行路径（INFRA Travel Routes），相关IWeb Infra Roads网页地址为http://basenet.fs.fed.us/support/help/roads/。所有路由道路均需在INFRA数据库中存有对应数据，且所有在INFRA数据库中存有数据的道路均需配置路由信息。