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# 如何查找具有逐向指引的路线
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CalculateRoutes API 可帮助您找到出发地与目的地之间的最佳路线，以及司机休息的最佳时机。它支持汽车、卡车、行人和踏板车等出行模式。它还支持多达 25 个航点（中途停留），包括出发地和目的地，且仅有少量限制条件。

## 潜在使用案例
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+ **创建导航移动应用程序：**使用 API 获取逐向导航指引。
+ **在 Web 平台上显示路线：**为 Web 应用程序显示详细的路线指引，以帮助您进行导航。

## 示例
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### 使用 Car TravelMode 计算路线
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------
#### [ Sample request ]

```
{
    "Origin": [
        -123.118105,
        49.282423
    ],
    "Destination": [
        -123.020098,
        49.232872
    ],
    "TravelStepType": "TurnByTurn",
    "TravelMode": "Car"
}
```

------
#### [ Sample response ]

```
{
    "LegGeometryFormat": "FlexiblePolyline",
    "Notices": [],
    "Routes": [
        {
            "Legs": [
                {
                    "Geometry": {
                        "Polyline": "Redacted"
                    },
                    "TravelMode": "Car",
                    "Type": "Vehicle",
                    "VehicleLegDetails": {
                        "Arrival": {
                            "Place": {
                                "Position": [-123.0203051, 49.2328499]
                            }
                        },
                        "Departure": {
                            "Place": {
                                "Position": [-123.1180883, 49.2824349]
                            }
                        },
                        "TravelSteps": [
                            {
                                "Distance": 1288,
                                "Duration": 102,
                                "Type": "Depart",
                                "NextRoad": {
                                    "RoadName": "W Georgia St",
                                    "RouteNumber": "HWY-1A"
                                }
                            },
                            {
                                "Distance": 262,
                                "Duration": 24,
                                "Type": "Keep",
                                "NextRoad": {
                                    "RoadName": "Main St",
                                    "RouteNumber": "HWY-1A"
                                }
                            },
                            {
                                "Distance": 1356,
                                "Duration": 134,
                                "Type": "Turn",
                                "NextRoad": {
                                    "RoadName": "Main St",
                                    "RouteNumber": "HWY-1A"
                                }
                            },
                            {
                                "Distance": 7092,
                                "Duration": 568,
                                "Type": "Keep",
                                "NextRoad": {
                                    "RoadName": "Kingsway",
                                    "RouteNumber": "HWY-1A"
                                }
                            },
                            {
                                "Distance": 65,
                                "Duration": 26,
                                "Type": "Turn"
                            },
                            {
                                "Distance": 0,
                                "Duration": 0,
                                "Type": "Arrive"
                            }
                        ]
                    }
                }
            ]
        }
    ]
}
```

------
#### [ cURL ]

```
curl --request POST \
  --url 'https://routes.geo.eu-central-1.amazonaws.com/v2/routes?key=Your_key' \
  --header 'Content-Type: application/json' \
  --data '{
  "Origin": [
    -123.118105,
    49.282423
  ],
  "Destination": [
    -123.020098,
    49.232872
  ],
  "TravelStepType": "TurnByTurn",
  "TravelMode": "Car"
}'
```

------
#### [ AWS CLI ]

```
aws geo-routes calculate-routes --key ${YourKey} \
--origin -123.118105 49.282423 \
--destination -123.020098 49.232872 \
--travel-step-type "TurnByTurn" \
--travel-mode "Car"
```

------