Speed Limits

This feature class identifies the legal speed limit for Portland streets. Not every street segment in the City is included. The dataset includes the speed limits for surface streets where the limit was implemented by an ODOT speed zone order or where a speed limit was authorized by statutes governing speeds in business districts, around schools, along roadways with bicycle or pedestrian improvements, or on non-arterial, residential streets. -- Additional Information: Category: Transportation - Streets Purpose: To identify designated speed limits on Portland streets. Update Frequency: As Needed -- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?=DisplayLayer=54340本要素类（Feature Class）用于标识波特兰街道的法定限速。本市并非所有街道路段均纳入本数据集。本数据集涵盖的地面街道限速，其设定依据包含两类情形：一是由俄勒冈州交通局（ODOT）发布的限速区命令确立的限速标准；二是由限速相关法规授权的限速，具体涵盖商业区、学校周边、配套自行车或行人通行设施的路段，以及非主干路、居住性街道。——附加信息：类别：交通 - 街道；用途：识别波特兰街道的指定限速标准；更新频率：按需更新；元数据链接：https://www.portlandmaps.com/metadata/index.cfm?=DisplayLayer=54340