HERE 地图路由 API v8：街道属性

Question

我正在通过 HERE Maps Routing API v8 请求路线，目前是这样

curl --location --request GET 'https://router.hereapi.com/v8/routes?apiKey={{someapikey}}&return=polyline&spans=functionalClass,streetAttributes&origin=38.577482,-121.858775&destination=38.682991,-121.576498&transportMode=truck'

此 returns 结果包含功能类和道路属性，如下所示：

// ...
"spans": [
    {
        "offset": 0,
        "streetAttributes": [
            "rightDrivingSide"
        ],
        "functionalClass": 4
    },
    {
        "offset": 205,
        "streetAttributes": [
            "rightDrivingSide",
            "dividedRoad"
        ],
        "functionalClass": 1
    }
// ...

这很好，但是有没有 streetAttributes 的可能值列表？我只发现 https://developer.here.com/documentation/android-premium/3.16/api_reference_java/com/here/android/mpa/common/RoadElement.Attribute.html 与某种程度相似，但很高兴知道不同的值 streetAttributes returns.

Answer 1

它被记录在案，但你可能会错过它。当你转到API参考（https://developer.here.com/documentation/routing-api/8.6.4/api-reference-swagger.html）时，你需要点击打开200 OK响应，响应的每个子键也必须点击。如果你向下挖掘，你会看到我在这里复制的 streetAttributes 文档：

StreetAttributes is applied to a span of a route section and describes attribute flags of a street.

rightDrivingSide: Do vehicles have to drive on the right-hand side of the road or the left-hand side.
dirtRoad: This part of the route has an un-paved surface.
tunnel: This part of the route is a tunnel.
bridge: This part of the route is a bridge.
ramp: This part of the route is a ramp (usually connecting to/from/between highways).
motorway: This part of the route is a controlled access road (usually highways).
roundabout: This part of the route is a roundabout.
underConstruction: This part of the route is under construction.
dividedRoad: This part of the route uses a road with a physical or legal divider in the middle.
privateRoad: This part of the route uses a privately owned road.
As it is possible that new street attributes are supported in the future, unknown street attributes should be ignored.

HERE 地图路由 API v8：街道属性

HERE Maps Routing API v8: Street attributes

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