立交桥 API 和道路车道

Question

我用 Python 编写了一个脚本，给定纬度/经度，生成包含道路边缘、人行横道和车道的 geojson。看起来像这样：

def fetch_intersection_data(lat, lon, radius: int = 20):
    """
    Fetch intersection data from OpenStreetMap using Overpass API and convert to GeoJSON.
    
    :param lat: Latitude of the center of the intersection
    :param lon: Longitude of the center of the intersection
    :param radius: Radius around the point to search (in meters)
    :return: GeoJSON data as a dictionary
    """
    overpass_url = "http://overpass-api.de/api/interpreter"
    overpass_query = f"""
                [out:json];
                (
                way["highway"](around:{radius},{lat},{lon});
                node["highway"="crossing"](around:{radius},{lat},{lon});
                way["lanes"](around:{radius},{lat},{lon});
                way["lanes:forward"](around:{radius},{lat},{lon});
                way["lanes:backward"](around:{radius},{lat},{lon});
                );
                out geom;
    """
    print(overpass_query)
    response = requests.get(overpass_url, params={'data': overpass_query})
    osm_data = response.json()

    with open('raw_data.json', 'w') as f:
        json.dump(osm_data, f)

    try:
        features = []

        for element in osm_data['elements']:
                feature = {
                    "type": "Feature",
                    "properties": element.get('tags', {}),
                    "geometry": None
                }
                
                if element['type'] == 'way':
                    if 'geometry' in element:
                        feature['geometry'] = {
                            "type": "LineString",
                            "coordinates": [[point['lon'], point['lat']] for point in element['geometry']]
                        }
                    feature['properties']['id'] = element['id']

                elif element['type'] == 'node':
                    feature['geometry'] = {
                        "type": "Point",
                        "coordinates": [element['lon'], element['lat']]
                    }
                    feature['properties']['id'] = element['id']
                
                if feature['geometry']:
                    features.append(feature)
            
        geojson = {"type": "FeatureCollection","features": features}
    
    except Exception as e:
        print(e)

    return geojson

到目前为止一切顺利：它几乎完成了我需要的一切。例如，这就是我在

geojson.io

上绘制时 geojson 的样子：

现在，缺少的是道路内的车道。我的意思是我希望能够获取几何图形/坐标来绘制这样的东西（红色）：

API返回的JSON文件似乎没有车道坐标。我不确定我的查询是否缺少某些内容或者此信息是否不可用。

有什么想法吗？

Answer 1

OSM中的车道没有自己的坐标。车道是通过相应高速公路的属性指定的。它们主要由车道数和方向（相对于它们所属路线的方向）组成，还有一些很少出现的其他属性。所以你必须自己估计他们的位置。