试点将上海市的城市快速路使用motorway展示/Try to use the motorway key to display the urban expressway in Shanghai

本人长期希望推动将中国的城市快速路使用highway=motorway进行标识,原因如下:
1.在道路交通安全法(实施条例)、与道路相关的国标如交通标志(GB 5768.2)、与GIS相关国标如GB/T 28443 《导航电子地图图形符号》均将高速公路和城市快速路视为等效道路。
2.由于城市快速路与国道在osm均使用trunk进行标识,使视觉上造成道路功能混淆,且存在单一地级市规划修建的城市快速路能很好的与其它城市道路进行区分。存在部分高速公路网路段实际为城市快速路、部分地区混乱的高速公路规划造成高速公路路段难以纳入高速公路网的范畴。
3.由于中国道路系统两元对立(形成“城市道路”及“公路”体系),不能通过规划的行政区划等级进行等级划分,且部分发达地级市正在尝试将高速公路与快速路混合规划成“高快速路网”。

尝试将上海作为试点城市是因为:
1.上海具有全中国较为完善的城市快速路系统
2.上海作为直辖市是典型的统一规划“高快速路网”的代表
3.上海的城市快速路在道路标识上的使用较为规范(对于国家标准、部委行业标准)
4.上海数条沪高速已实际(如S1、S5)或指定(如S20)承担城市快速路功能
5.上海存在无编号的此类道路:东海大桥

希望以此探索将一些完善的地级市快速路网视为motorway

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I have had this translated.

I have long hoped to promote the use of highway=motorway for marking urban expressways in China for the following reasons:

  1. In the road traffic safety law (implementation regulations), road-related national standards such as traffic signs (GB 5768.2), and GIS-related national standards such as GB/T 28443 “navigation electronic map graphic symbols” will be highways and urban expressways as equivalent roads.
  2. Because of the urban expressway and national highway in osm are using trunk for marking, so that visually cause road function confusion, and there is a single prefecture-level city planning and construction of urban expressway can be well distinguished from other urban roads. The existence of part of the highway network sections actually urban expressway, some areas confusing highway planning caused by the highway sections difficult to include in the highway network.
  3. Because China’s road system duality (the formation of “urban roads” and “highway” system), not through the planning of the administrative division of grade, and some developed prefecture-level cities are trying to mix the highway and expressway planning into “High expressway network”.

Try to Shanghai as a pilot city because:

  1. Shanghai has a more complete urban expressway system throughout China
  2. Shanghai, as a municipality directly under the central government, is a typical representative of a unified planning “high expressway network”.
  3. Shanghai’s urban expressways are more standardized in the use of road signs (for national standards, ministry industry standards)
  4. Several Shanghai expressways have been actually (e.g. S1, S5) or designated (e.g. S20) to take on the function of urban expressways
  5. There is no number of such roads in Shanghai: Donghai Bridge

I hope this will explore some perfect prefecture-level city expressway network as motorway

"存在部分高速公路网路段实际为城市快速路、部分地区混乱的高速公路规划造成高速公路路段难以纳入高速公路网的范畴’ mean Describe two phenomena, one phenomenon is that the expressway is taking on the function of urban expressway; the other phenomenon is that the expressway network planned by the provincial government is very chaotic, and some expressway sections used illegal number or cannot be assigned Considered part of the locally planned highway network

If these urban expressways you mention are not built to motorway standards (such as having short-radius exits, lack of shoulders) or have other disqualifying features (like some at-grade intersections or some access to abutting properties), then the better tagging would be to use a highway=* tag appropriate to their connectivity importance and add expressway=yes to indicate the enhanced “expressway” construction:

  • highway=trunk for most important regional connections between cities
  • highway=primary for most important roads within an city that aren’t the main connections to other cities
  • highway=secondary for less important roads within a city.

Any of the road highway=trunk|primary|secondary|tertiary values can be paired with expressway=yes to indicate this enhanced construction. While the OSMCarto rendering on openstreetmap.org doesn’t differentiate roads tagged with expressway=yes yet, other renderers do. See this example of Austin, Texas, USA in the Americana renderer which highlights roads tagged expressway=yes versus the same view in OSMCarto.

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It is reasonable that China’s expressways do not have road shoulders, because there are indeed some road sections carried by expressway routes without road shoulders. The main reason is that China, like some East Asian countries, has the phenomenon of separation of urban road systems and highways. The two systems have the highest level road types are legally equal

Based on my memory all the Shanghai expressway qualifies to be a highway=motorway. But please double check the area at Hongqiao Airport (T2) and Railway station. Those sections dropping off passengers are for sure no highway=motorway. Like Way: 185031852 | OpenStreetMap
You may want to change that back.

Pudong Airport looks better.