# 🚧 Building a Routing Request

This section guides you through the steps to construct a complete request for the routing API.

Each request is composed of multiple blocks, each defining a key aspect of the route calculation.

## 🧱 Basic Structure

A standard request is a JSON object that includes at minimum:


```
{
  "destinations": [ ... ],
  "routingVehicleProfile": { ... }
}
```

### 🗺️ 1. destinations

List of GPS coordinates (latitude / longitude) forming the route.
The first point is the **starting point**, the last one is the **destination**, and any others are intermediate waypoints.


```
  "destinations": [
    {
      "coordinateSat": {
        "lon": 2.38261,
        "lat": 48.85356
      }
    },
    {
      "coordinateSat": {
        "lon": 4.35631,
        "lat": 50.84531
      }
    }
  ]
```

### 🚗 2. routingVehicleProfile

Defines the **vehicle type**, **transport mode**, and **physical or legal characteristics** used during routing.

This includes parameters like height, width, length, weight, and axle weight in centimeters.

**Example:**


```
{
  "routingVehicleProfile": {
    "transportMode": "CAR",
    "routingVehicleFeature": {
      "height": "190",
      "width": "230",
      "length": "1875",
      "weight": "35",
      "axleWeight": "10"
    }
  }
```

### 🧭 3. routingCriterias (optional)

Specifies route preferences such as avoiding tolls, ferries, or motorways.

**Example:**


```
"routingCriterias": ["AVOID_TOLLS", "AVOID_FERRIES"]
```

### ⚙️ 4. options (optional)

Enables additional output features such as polyline geometry.

**Example:**


```
"options": ["POLYLINE"]
```

### 🔁 Full Example


```
{
  "destinations": [
    {
      "coordinateSat": {
        "lon": 2.38261,
        "lat": 48.85356
      }
    },
    {
      "coordinateSat": {
        "lon": 4.35631,
        "lat": 50.84531
      }
    }
  ],
  "options": [
    "POLYLINE"
  ],
  "routingCriterias": [
    "AVOID_FERRIES",
    "AVOID_TOLLS"
  ],
  "routingVehicleProfile": {
    "transportMode": "CAR",
    "routingVehicleFeature": {
      "height": "190",
      "width": "230",
      "length": "1875",
      "weight": "35",
      "axleWeight": "10"
    }
  }
}
```