Junction definition details

Important Note
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Purpose

Junction definition details is a REST API endpoint that reads static information about a selected junction. It contains the junction ID, name, status, and other static details of a selected junction.

The response can also, on demand, contain information about the junction model: junction boundary and its approaches and exits. It does not include any dynamic real-time data that is available using the Junction live data details and Junction live data list endpoints.

Request data

You can obtain the Junction definition details by sending a GET request, as shown in the following example.

• Constants and parameters enclosed in curly brackets must be replaced with their values.
• Please see the following Request parameters section with the required and optional parameters tables for their values. The generic request format is as follows.

HTTPS method: GET

https://api.tomtom.com/junction-analytics/junctions/1/{junctionId}/definition?key={Your_API_Key}&includeGeometry={includeGeometry}

Request parameters

The following table shows the query parameters:

• Required parameters must be used or the call will fail.
• Optional parameters may be used.

Request headers

Example request

The following is an example curl request:

$ curl '/junction-analytics/junctions/1/{junctionId}/definition?key={Your_API_Key}&includeGeometry={includeGeometry}' -i -X GET \
    -H 'Content-Type: application/json' \

Response data

This response returns junction definition details.

Example response

The following JSON code block is an example response:

1{
2  "id": "5fd9bb5a88a13608d7b5d92d",
3  "name": "First Street - Second Street",
4  "status": "ACTIVE",
5  "rawJunction": {
6    "type": "Feature",
7    "properties": {},
8    "geometry": {
9      "type": "Polygon",
10      "coordinates": [
11        [
12          [19.44755981778522, 51.72758385424984],
13          [19.44698786140313, 51.72702850798893],
14          [19.447606192627404, 51.726214626143076],
15          [19.448688272269123, 51.72699499549654],
16          [19.44755981778522, 51.72758385424984]
17        ]
18      ]
19    }
20  },
21  "detectionConfig": {
22    "autodetectName": false
23  },
24  "junctionModel": {
25    "id": "19.4521-51.7766",
26    "name": "First Street - Second Street",
27    "countryCode": "DEU",
28    "driveOnLeft": false,
29    "trafficLights": true,
30    "approaches": [
31      {
32        "id": 1397964518,
33        "name": "First Street West Bound",
34        "roadName": "First Street",
35        "direction": "WEST",
36        "frc": 7,
37        "length": 192.77,
38        "oneWayRoad": false,
39        "excluded": false,
40        "drivable": true,
41        "segmentedGeometry": {
42          "type": "MultiLineString",
43          "coordinates": [
44            [
45              [19.45464, 51.77712],
46              [19.45452, 51.77711],
47              [19.45443, 51.77708]
48            ]
49          ]
50        },
51        "userPoints": [
52          {
53            "type": "Point",
54            "coordinates": [19.45464, 51.77712]
55          },
56          {
57            "type": "Point",
58            "coordinates": [19.45443, 51.77708]
59          }
60        ],
61        "openlr": "Cw3VGCTJOhJTB/5H/toWSXY=",
62        "dataNotAvailable": false
63      },
64      {
65        "id": -2036692957,
66        "name": "Second Street North Bound",
67        "roadName": "Second Street",
68        "direction": "NORTH",
69        "frc": 4,
70        "length": 236.16,
71        "oneWayRoad": true,
72        "excluded": false,
73        "drivable": true,
74        "segmentedGeometry": {
75          "type": "MultiLineString",
76          "coordinates": [
77            [
78              [19.45265, 51.77446],
79              [19.45224, 51.77653],
80              [19.45224, 51.77657]
81            ]
82          ]
83        },
84        "userPoints": [
85          {
86            "type": "Point",
87            "coordinates": [19.45265, 51.77446]
88          },
89          {
90            "type": "Point",
91            "coordinates": [19.45224, 51.77657]
92          }
93        ],
94        "openlr": "Cw3VGCTJOhJTB/5H/toWSXY=",
95        "dataNotAvailable": false
96      }
97    ],
98    "exits": [
99      {
100        "id": 2032081462,
101        "name": "First Street North Bound",
102        "roadName": "First Street",
103        "direction": "NORTH",
104        "frc": 4,
105        "oneWayRoad": false,
106        "drivable": true,
107        "segmentedGeometry": {
108          "type": "MultiLineString",
109          "coordinates": [
110            [
111              [19.45224, 51.77657],
112              [19.45222, 51.77665]
113            ]
114          ]
115        },
116        "openlr": "Dw3VGCTJOhJTB/5H/toWSXY="
117      },
118      {
119        "id": -351401112,
120        "name": "Second Street East Bound",
121        "roadName": "Second Street",
122        "direction": "EAST",
123        "frc": 7,
124        "oneWayRoad": false,
125        "drivable": true,
126        "segmentedGeometry": {
127          "type": "MultiLineString",
128          "coordinates": [
129            [
130              [19.45224, 51.77657],
131              [19.4525, 51.77659]
132            ]
133          ]
134        },
135        "openlr": "Ew3VGCTJOhJTB/5H/toWSXY="
136      }
137    ]
138  },
139  "createdAt": "2024-12-12T10:23:39.386Z",
140  "lastModifiedAt": "2024-12-12T10:25:49.843Z",
141  "lastUserUpdatedAt": "2024-12-12T10:23:39.386Z",
142  "timeZone": "Europe/Warsaw"
143}

Response fields

The following section describes all of the fields that can appear in a response.

id (string) Unique ID of the junction.

name (string) The name of the junction as generated automatically, or provided in the junction definition creation request.

status (string) One of the values: PREVIEW, ACTIVE, PENDING_UPDATE, ERROR. More details are available in the following section.

statusDetail (string) This appears in the case of an ERROR status, and provides further explanation.

rawJunction (object) A GeoJSON Feature, Polygon, or Point (with the radius property). It contains the junction boundary used in the creation process.

• GeoJSON Polygon specification
• GeoJSON Point specification

detectionConfig (object) Contains the detection configuration used in junction creation.

• autodetectName (boolean) If true, the junction name was created based on its approaches.

junctionModel (object) This contains junction geometry and other data. It is not available when the includeGeometry query param is false, and is not available in ERROR status.

• name (string) The name of the junction as automatically generated, or provided in the junction definition creation request.
• countryCode (string) The three-letter country code defined in the ISO 3166-1 alpha-3 standard.
• driveOnLeft (boolean) This is a flag with information about left-hand traffic (LHT) or right-hand traffic (RHT).
• trafficLights (boolean) This is true if traffic lights are inside the creation area.
• approaches[] (array) Contains junction approaches. Minimum number of approaches: 1.
  • id (integer) The approach ID is unique in the junction context.
  • name (string) Created based on the name and road direction. Example: "Some Street West Bound".
  • roadName (string) If the road has no name, it will be "Unnamed road".
  • direction (string) One of the values: SOUTH, WEST, EAST, NORTH, CLOCKWISE, COUNTER_CLOCKWISE.
  • frc (integer) Functional Road Class. One of the values: 0, 1, 2, 3, 4, 5, 6, 7.
  • length (float) Length of the given approach in meters.
  • oneWayRoad (boolean) It is true if it is a one-direction road or not a single carriageway road.
  • excluded (boolean) Indicates that live data for the approach is collected.
  • drivable (boolean) Indicates if the road is drivable.
  • segmentedGeometry (object) Geometry of the given approach, split by map segments. See: GeoJSON MultiLineString specification.
  • userPoints (array) Array of user-defined points that the geometry routes through. See: GeoJSON Point specification.
  • openlr (string) Geometry of given approach, encoded into OpenLR format. See the OpenLR specification.
  • dataNotAvailable (boolean) Indicates whether live data is available for the approach.
• exits[] (array) Contains junction exits. Minimum numbers of exits: 1.
  • id (integer) The exit ID is unique in the junction context.
  • name (string) This is created based on the name and road direction. Example: "Typical Street West Bound".
  • roadName (string) If the road has no name, it will be "Unnamed road".
  • direction (string) One of the values: SOUTH, WEST, EAST, NORTH, CLOCKWISE, COUNTER_CLOCKWISE.
  • frc (integer) Functional Road Class. One of the values: 0, 1, 2, 3, 4, 5, 6, 7.
  • oneWayRoad (boolean) It is true if it is a one-direction road or not a single carriageway road.
  • drivable (boolean) Indicates if the road is drivable.
  • segmentedGeometry (object) Geometry of the given exit, split by map segments. See the GeoJSON MultiLineString specification.
  • openlr (string) Geometry of the given exit, encoded into OpenLR format. See the OpenLR specification.

createdAt (date) The timestamp indicating when the junction definition was initially created, in ISO 8601 format.

lastModifiedAt (date) The timestamp of the most recent update to the junction definition, in ISO 8601 format.

lastUserUpdatedAt (date) The timestamp of the last update made by a user to the junction definition, in ISO 8601 format.

timeZone (string) The time zone associated with the junction, represented in the IANA time zone format (e.g., Europe/Warsaw).

Junction status

The following table shows the junction status.

Errors

The system generates an error response if there is an error in the supplied parameters or any other internal problem. This response is generated in the requested format.

Error response codes

The following table shows the HTTP error response codes.

Error response field

Example error response

The following is an example error response:

1{
2  "errorMessage": "Junction of id 5fd8da2b84510126b9d18b0d not found"
3}