General options

All OSRM HTTP requests use a common structure.

The following syntax applies to all services, except as noted.

Requests

GET /{service}/{version}/{profile}/{coordinates}[.{format}]?option=value&option=value

Parameter	Description
`service`	One of the following values: `route`, `nearest`, `table`, `match`, `trip`, `tile`
`version`	Version of the protocol implemented by the service. `v1` for all OSRM 5.x installations
`profile`	Mode of transportation, is determined statically by the Lua profile that is used to prepare the data using `osrm-extract`. Typically `car`, `bike` or `foot` if using one of the supplied profiles.
`coordinates`	String of format `{longitude},{latitude};{longitude},{latitude}[;{longitude},{latitude} ...]` or `polyline({polyline})`.
`format`	Only `json` is supported at the moment. This parameter is optional and defaults to `json`.

Passing any option=value is optional. polyline follows Google's polyline format with precision 5 by default and can be generated using this package.

To pass parameters to each location some options support an array like encoding:

Request options

Option	Values	Description
bearings	`{bearing};{bearing}[;{bearing} ...]`	Limits the search to segments with given bearing in degrees towards true north in clockwise direction.
radiuses	`{radius};{radius}[;{radius} ...]`	Limits the search to given radius in meters.
generate_hints	`true` (default), `false`	Adds a Hint to the response which can be used in subsequent requests, see `hints` parameter.
hints	`{hint};{hint}[;{hint} ...]`	Hint from previous request to derive position in street network.

Where the elements follow the following format:

Element	Values
bearing	`{value},{range}` `integer 0 .. 360,integer 0 .. 180`
radius	`double >= 0` or `unlimited` (default)
hint	Base64 `string`

{option}={element};{element}[;{element} ... ]

The number of elements must match exactly the number of locations. If you don't want to pass a value but instead use the default you can pass an empty element.

Example: 2nd location use the default value for option:

{option}={element};;{element}

Example Requests

# Query on Berlin with three coordinates:
curl 'http://router.project-osrm.org/route/v1/driving/13.388860,52.517037;13.397634,52.529407;13.428555,52.523219?overview=false'

# Using polyline:
curl 'http://router.project-osrm.org/route/v1/driving/polyline(ofp_Ik_vpAilAyu@te@g`E)?overview=false'

Responses

Every response object has a code property containing one of the strings below or a service dependent code:

Type	Description
`Ok`	Request could be processed as expected.
`InvalidUrl`	URL string is invalid.
`InvalidService`	Service name is invalid.
`InvalidVersion`	Version is not found.
`InvalidOptions`	Options are invalid.
`InvalidQuery`	The query string is synctactically malformed.
`InvalidValue`	The successfully parsed query parameters are invalid.
`NoSegment`	One of the supplied input coordinates could not snap to street segment.
`TooBig`	The request size violates one of the service specific request size restrictions.

message is a optional human-readable error message. All other status types are service dependent.
In case of an error the HTTP status code will be 400. Otherwise the HTTP status code will be 200 and code will be Ok.

Example response

{
"code": "Ok",
"message": "Everything worked"
}

Services

Nearest service

Snaps a coordinate to the street network and returns the nearest n matches.

GET http://{server}/nearest/v1/{profile}/{coordinates}.json?number={number}

Where coordinates only supports a single {longitude},{latitude} entry.

In addition to the general options the following options are supported for this service:

Option	Values	Description
number	`integer >= 1` (default `1`)	Number of nearest segments that should be returned.

Response

code if the request was successful Ok otherwise see the service dependent and general status codes.
waypoints array of Waypoint objects sorted by distance to the input coordinate. Each object has at least the following additional properties:
- distance: Distance in meters to the supplied input coordinate.

Example Requests

# Querying nearest three snapped locations of `13.388860,52.517037` with a bearing between `20° - 340°`.
curl 'http://router.project-osrm.org/nearest/v1/driving/13.388860,52.517037?number=3&bearings=0,20'

Example Response

{
   "waypoints" : [
      {
         "hint" : "KSoKADRYroqUBAEAEAAAABkAAAAGAAAAAAAAABhnCQCLtwAA_0vMAKlYIQM8TMwArVghAwEAAQH1a66g",
         "distance" : 4.152629,
         "name" : "Friedrichstraße",
         "location" : [
            13.388799,
            52.517033
         ]
      },
      {
         "hint" : "KSoKADRYroqUBAEABgAAAAAAAAAAAAAAKQAAABhnCQCLtwAA7kvMAAxZIQM8TMwArVghAwAAAQH1a66g",
         "distance" : 11.811961,
         "name" : "Friedrichstraße",
         "location" : [
            13.388782,
            52.517132
         ]
      },
      {
         "hint" : "KioKgDbbDgCUBAEAAAAAABoAAAAAAAAAPAAAABlnCQCLtwAA50vMADJZIQM8TMwArVghAwAAAQH1a66g",
         "distance" : 15.872438,
         "name" : "Friedrichstraße",
         "location" : [
            13.388775,
            52.51717
         ],
      }
   ],
   "code" : "Ok"
}

Route service

Finds the fastest route between coordinates in the supplied order.

GET /route/v1/{profile}/{coordinates}?alternatives={true|false}&steps={true|false}&geometries={polyline|polyline6|geojson}&overview={full|simplified|false}&annotations={true|false}

In addition to the general options the following options are supported for this service:

Option	Values	Description
alternatives	`true`, `false` (default)	Search for alternative routes and return as well.*
steps	`true`, `false` (default)	Return route steps for each route leg
annotations	`true`, `false` (default)	Returns additional metadata for each coordinate along the route geometry.
geometries	`polyline` (default), `polyline6`, `geojson`	Returned route geometry format (influences overview and per step)
overview	`simplified` (default), `full`, `false`	Add overview geometry either full, simplified according to highest zoom level it could be display on, or not at all.
continue_straight	`default` (default), `true`, `false`	Forces the route to keep going straight at waypoints constraining uturns there even if it would be faster. Default value depends on the profile.

* Please note that even if an alternative route is requested, a result cannot be guaranteed.

Response

code if the request was successful Ok otherwise see the service dependent and general status codes.
waypoints: Array of Waypoint objects representing all waypoints in order:
routes: An array of Route objects, ordered by descending recommendation rank.

In case of error the following codes are supported in addition to the general ones:

Type	Description
`NoRoute`	No route found.

All other properties might be undefined.

Example Request

# Query on Berlin with three coordinates and no overview geometry returned:
curl 'http://router.project-osrm.org/route/v1/driving/13.388860,52.517037;13.397634,52.529407;13.428555,52.523219?overview=false'

Table service

Computes the duration of the fastest route between all pairs of supplied coordinates.

GET /table/v1/{profile}/{coordinates}?{sources}=[{elem}...];&destinations=[{elem}...]

Coordinates

In addition to the general options the following options are supported for this service:

Option	Values	Description
sources	`{index};{index}[;{index} ...]` or `all` (default)	Use location with given index as source.
destinations	`{index};{index}[;{index} ...]` or `all` (default)	Use location with given index as destination.

Unlike other array encoded options, the length of sources and destinations can be smaller or equal to number of input locations;

Example:

sources=0;5;7&destinations=5;1;4;2;3;6

Element	Values
index	`0 <= integer < #locations`

Example Request

# Returns a 3x3 matrix:
curl 'http://router.project-osrm.org/table/v1/driving/13.388860,52.517037;13.397634,52.529407;13.428555,52.523219'

# Returns a 1x3 matrix
curl 'http://router.project-osrm.org/table/v1/driving/13.388860,52.517037;13.397634,52.529407;13.428555,52.523219?sources=0'

# Returns a asymmetric 3x2 matrix with from the polyline encoded locations `qikdcB}~dpXkkHz`:
curl 'http://router.project-osrm.org/table/v1/driving/polyline(egs_Iq_aqAppHzbHulFzeMe`EuvKpnCglA)?sources=0;1;3&destinations=2;4'

Response

code if the request was successful Ok otherwise see the service dependent and general status codes.
durations array of arrays that stores the matrix in row-major order. durations[i][j] gives the travel time from the i-th waypoint to the j-th waypoint. Values are given in seconds.
sources array of Waypoint objects describing all sources in order
destinations array of Waypoint objects describing all destinations in order

In case of error the following codes are supported in addition to the general ones:

Type	Description
`NoTable`	No route found.

All other properties might be undefined.

Match service

Map matching matches/snaps given GPS points to the road network in the most plausible way. Please note the request might result multiple sub-traces. Large jumps in the timestamps (> 60s) or improbable transitions lead to trace splits if a complete matching could not be found. The algorithm might not be able to match all points. Outliers are removed if they can not be matched successfully.

GET /match/v1/{profile}/{coordinates}?steps={true|false}&geometries={polyline|polyline6|geojson}&overview={simplified|full|false}&annotations={true|false}

In addition to the general options the following options are supported for this service:

Option	Values	Description
steps	`true`, `false` (default)	Return route steps for each route
geometries	`polyline` (default), `polyline6`, `geojson`	Returned route geometry format (influences overview and per step)
annotations	`true`, `false` (default)	Returns additional metadata for each coordinate along the route geometry.
overview	`simplified` (default), `full`, `false`	Add overview geometry either full, simplified according to highest zoom level it could be display on, or not at all.
timestamps	`{timestamp};{timestamp}[;{timestamp} ...]`	Timestamps for the input locations in seconds since UNIX epoch. Timestamps need to be monotonically increasing.
radiuses	`{radius};{radius}[;{radius} ...]`	Standard deviation of GPS precision used for map matching. If applicable use GPS accuracy.

Parameter	Values
timestamp	`integer` seconds since UNIX epoch
radius	`double >= 0` (default 5m)

The radius for each point should be the standard error of the location measured in meters from the true location. Use Location.getAccuracy() on Android or CLLocation.horizontalAccuracy on iOS. This value is used to determine which points should be considered as candidates (larger radius means more candidates) and how likely each candidate is (larger radius means far-away candidates are penalized less). The area to search is chosen such that the correct candidate should be considered 99.9% of the time (for more details see this ticket).

Response

code if the request was successful Ok otherwise see the service dependent and general status codes.
tracepoints: Array of Waypoint objects representing all points of the trace in order. If the trace point was ommited by map matching because it is an outlier, the entry will be null. Each Waypoint object has the following additional properties:
- matchings_index: Index to the Route object in matchings the sub-trace was matched to.
- waypoint_index: Index of the waypoint inside the matched route.
matchings: An array of Route objects that assemble the trace. Each Route object has the following additional properties:
- confidence: Confidence of the matching. float value between 0 and 1. 1 is very confident that the matching is correct.

In case of error the following codes are supported in addition to the general ones:

Type	Description
`NoMatch`	No matchings found.

All other properties might be undefined.

Trip service

The trip plugin solves the Traveling Salesman Problem using a greedy heuristic (farthest-insertion algorithm). The returned path does not have to be the fastest path, as TSP is NP-hard it is only an approximation. Note that if the input coordinates can not be joined by a single trip (e.g. the coordinates are on several disconnected islands) multiple trips for each connected component are returned.

GET /trip/v1/{profile}/{coordinates}?steps={true|false}&geometries={polyline|polyline6|geojson}&overview={simplified|full|false}&annotations={true|false}'

In addition to the general options the following options are supported for this service:

Option	Values	Description
steps	`true`, `false` (default)	Return route instructions for each trip
annotations	`true`, `false` (default)	Returns additional metadata for each coordinate along the route geometry.
geometries	`polyline` (default), `polyline6`, `geojson`	Returned route geometry format (influences overview and per step)
overview	`simplified` (default), `full`, `false`	Add overview geometry either full, simplified according to highest zoom level it could be display on, or not at all.

Response

code if the request was successful Ok otherwise see the service dependent and general status codes.
waypoints: Array of Waypoint objects representing all waypoints in input order. Each Waypoint object has the following additional properties:
- trips_index: Index to trips of the sub-trip the point was matched to.
- waypoint_index: Index of the point in the trip.
trips: An array of Route objects that assemble the trace.

In case of error the following codes are supported in addition to the general ones:

Type	Description
`NoTrips`	No trips found.

All other properties might be undefined.

Tile service

This service generates Mapbox Vector Tiles that can be viewed with a vector-tile capable slippy-map viewer. The tiles contain road geometries and metadata that can be used to examine the routing graph. The tiles are generated directly from the data in-memory, so are in sync with actual routing results, and let you examine which roads are actually routable, and what weights they have applied.

GET /tile/v1/{profile}/tile({x},{y},{zoom}).mvt

The x, y, and zoom values are the same as described at https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames, and are supported by vector tile viewers like Mapbox GL JS.

Example request

# This fetches a Z=13 tile for downtown San Francisco:
curl 'http://router.project-osrm.org/tile/v1/car/tile(1310,3166,13).mvt'

Example response

http://map.project-osrm.org/debug/#14.33/52.5212/13.3919

The response object is either a binary encoded blob with a Content-Type of application/x-protobuf, or a 404 error. Note that OSRM is hard-coded to only return tiles from zoom level 12 and higher (to avoid accidentally returning extremely large vector tiles).

Vector tiles contain two layers:

speeds layer:

Property	Type	Description
`speed`	`integer`	the speed on that road segment, in km/h
`is_small`	`boolean`	whether this segment belongs to a small (< 1000 node) strongly connected component
`datasource`	`string`	the source for the speed value (normally `lua profile` unless you're using the traffic update feature, in which case it contains the stem of the filename that supplied the speed value for this segment
`duration`	`float`	how long this segment takes to traverse, in seconds
`name`	`string`	the name of the road this segment belongs to

turns layer:

Property	Type	Description
`bearing_in`	`integer`	the absolute bearing that approaches the intersection. -180 to +180, 0 = North, 90 = East
`turn_angle`	`integer`	the angle of the turn, relative to the `bearing_in`. -180 to +180, 0 = straight ahead, 90 = 90-degrees to the right
`cost`	`float`	the time we think it takes to make that turn, in seconds. May be negative, depending on how the data model is constructed (some turns get a "bonus").

Result objects

Route object

Represents a route through (potentially multiple) waypoints.

Properties

distance: The distance traveled by the route, in float meters.
duration: The estimated travel time, in float number of seconds.
geometry: The whole geometry of the route value depending on overview parameter, format depending on the geometries parameter. See RouteStep's geometry property for a parameter documentation.
weight: The calculated weight of the route.
weight_name: The name of the weight profile used during extraction phase.

overview	Description
simplified	Geometry is simplified according to the highest zoom level it can still be displayed on full.
full	Geometry is not simplified.
false	Geometry is not added.

legs: The legs between the given waypoints, an array of RouteLeg objects.

Example

Three input coordinates, geometry=geojson, steps=false:

{
  "distance": 90.0,
  "duration": 300.0,
  "weight": 300.0,
  "weight_name": "duration",
  "geometry": {"type": "LineString", "coordinates": [[120.0, 10.0], [120.1, 10.0], [120.2, 10.0], [120.3, 10.0]]},
  "legs": [
    {
      "distance": 30.0,
      "duration": 100.0,
      "steps": []
    },
    {
      "distance": 60.0,
      "duration": 200.0,
      "steps": []
    }
  ]
}

RouteLeg object

Represents a route between two waypoints.

Properties

distance: The distance traveled by this route leg, in float meters.
duration: The estimated travel time, in float number of seconds.
weight: The calculated weight of the route leg.
summary: Summary of the route taken as string. Depends on the steps parameter:

steps
true	Names of the two major roads used. Can be empty if route is too short.
false	empty `string`

steps: Depends on the steps parameter.

steps
true	array of `RouteStep` objects describing the turn-by-turn instructions
false	empty array

annotation: Additional details about each coordinate along the route geometry:

annotations
true	An `Annotation` object containing node ids, durations distances and
false	weights `undefined`

Example

With steps=false and annotations=true:

{
  "distance": 30.0,
  "duration": 100.0,
  "weight": 100.0,
  "steps": [],
  "annotation": {
    "distance": [5,5,10,5,5],
    "duration": [15,15,40,15,15],
    "datasources": [1,0,0,0,1],
    "nodes": [49772551,49772552,49786799,49786800,49786801,49786802]
  }
}

Annotation object

Annotation of the whole route leg with fine-grained information about each segment or node id.

Properties

distance: The distance, in metres, between each pair of coordinates
duration: The duration between each pair of coordinates, in seconds
datasources: The index of the datasource for the speed between each pair of coordinates. 0 is the default profile, other values are supplied via --segment-speed-file to osrm-contract
nodes: The OSM node ID for each coordinate along the route, excluding the first/last user-supplied coordinates
weight: The weights between each pair of coordinates

Example

{
  "distance": [5,5,10,5,5],
  "duration": [15,15,40,15,15],
  "datasources": [1,0,0,0,1],
  "nodes": [49772551,49772552,49786799,49786800,49786801,49786802],
  "weight": [15,15,40,15,15]
}

RouteStep object

A step consists of a maneuver such as a turn or merge, followed by a distance of travel along a single way to the subsequent step.

Properties

distance: The distance of travel from the maneuver to the subsequent step, in float meters.
duration: The estimated travel time, in float number of seconds.
geometry: The unsimplified geometry of the route segment, depending on the geometries parameter.
weight: The calculated weight of the step.

`geometry`
polyline	polyline with precision 5 in [latitude,longitude] encoding
polyline6	polyline with precision 6 in [latitude,longitude] encoding
geojson	GeoJSON `LineString`

name: The name of the way along which travel proceeds.
ref: A reference number or code for the way. Optionally included, if ref data is available for the given way.
pronunciation: The pronunciation hint of the way name. Will be undefined if there is no pronunciation hit.
destinations: The destinations of the way. Will be undefined if there are no destinations.
mode: A string signifying the mode of transportation.
maneuver: A StepManeuver object representing the maneuver.
intersections: A list of Intersection objects that are passed along the segment, the very first belonging to the StepManeuver

Example

{
   "geometry" : "{lu_IypwpAVrAvAdI",
   "mode" : "driving",
   "duration" : 15.6,
   "weight" : 15.6,
   "intersections" : [
      {  "bearings" : [ 10, 92, 184, 270 ],
         "lanes" : [
            { "indications" : [ "left", "straight" ],
               "valid" : "false" },
            { "valid" : "true",
               "indications" : [ "right" ] }
         ],
         "out" : 2,
         "in" : 3,
         "entry" : [ "true", "true", "true", "false" ],
         "location" : [ 13.39677, 52.54366 ]
      },
      {  "out" : 1,
         "lanes" : [
            { "indications" : [ "straight" ],
               "valid" : "true" },
            { "indications" : [ "right" ],
               "valid" : "false" }
         ],
         "bearings" : [ 60, 240, 330 ],
         "in" : 0,
         "entry" : [ "false", "true", "true" ],
         "location" : [ 13.394718, 52.543096 ]
      }
   ],
   "name" : "Lortzingstraße",
   "distance" : 152.3,
   "maneuver" : {
      "modifier" : "right",
      "type" : "turn"
   }
}

StepManeuver object

Properties

location: A [longitude, latitude] pair describing the location of the turn.
bearing_before: The clockwise angle from true north to the direction of travel immediately before the maneuver. Range 0-359.
bearing_after: The clockwise angle from true north to the direction of travel immediately after the maneuver. Range 0-359.
type A string indicating the type of maneuver. new identifiers might be introduced without API change Types unknown to the client should be handled like the turn type, the existance of correct modifier values is guranteed.

`type`	Description
`turn`	a basic turn into direction of the `modifier`
`new name`	no turn is taken/possible, but the road name changes. The road can take a turn itself, following `modifier`.
`depart`	indicates the departure of the leg
`arrive`	indicates the destination of the leg
`merge`	merge onto a street (e.g. getting on the highway from a ramp, the `modifier specifies the direction of the merge`)
`ramp`	Deprecated. Replaced by `on_ramp` and `off_ramp`.
`on ramp`	take a ramp to enter a highway (direction given my `modifier`)
`off ramp`	take a ramp to exit a highway (direction given my `modifier`)
`fork`	take the left/right side at a fork depending on `modifier`
`end of road`	road ends in a T intersection turn in direction of `modifier`
`use lane`	going straight on a specific lane
`continue`	Turn in direction of `modifier` to stay on the same road
`roundabout`	traverse roundabout, has additional property `exit` with NR if the roundabout is left. `the modifier specifies the direction of entering the roundabout`
`rotary`	a traffic circle. While very similar to a larger version of a roundabout, it does not necessarily follow roundabout rules for right of way. It can offer `rotary_name/rotary_pronunciation` in addition to the `exit` parameter.
`roundabout turn`	Describes a turn at a small roundabout that should be treated as normal turn. The `modifier` indicates the turn direciton. Example instruction: `At the roundabout turn left`.
`notification`	not an actual turn but a change in the driving conditions. For example the travel mode. If the road takes a turn itself, the `modifier` describes the direction

Please note that even though there are new name and notification instructions, the mode and name can change between all instructions. They only offer a fallback in case nothing else is to report.

modifier An optional string indicating the direction change of the maneuver.

`modifier`	Description
`uturn`	indicates reversal of direction
`sharp right`	a sharp right turn
`right`	a normal turn to the right
`slight right`	a slight turn to the right
`straight`	no relevant change in direction
`slight left`	a slight turn to the left
`left`	a normal turn to the left
`sharp left`	a sharp turn to the left

The list of turns without a modifier is limited to: depart/arrive. If the source/target location is close enough to the depart/arrive location, no modifier will be given.

The meaning depends on the type property.

`type`	Description
`turn`	`modifier` indicates the change in direction accomplished through the turn
`depart`/`arrive`	`modifier` indicates the position of departure point and arrival point in relation to the current direction of travel

exit An optional integer indicating number of the exit to take. The property exists for the following type property:

`type`	Description
`roundabout`/`rotary`	Number of the roundabout exit to take. If exit is `undefined` the destination is on the roundabout.
else	Indicates the number of intersections passed until the turn. Example instruction: `at the fourth intersection, turn left`

New properties (potentially depending on type) may be introduced in the future without an API version change.

Lane object

A Lane represents a turn lane at the corresponding turn location.

Properties

indications: a indication (e.g. marking on the road) specifying the turn lane. A road can have multiple indications (e.g. an arrow pointing straight and left). The indications are given in an array, each containing one of the following types. Further indications might be added on without an API version change.

`value`	Description
`none`	No dedicated indication is shown.
`uturn`	An indication signaling the possibility to reverse (i.e. fully bend arrow).
`sharp right`	An indication indicating a sharp right turn (i.e. strongly bend arrow).
`right`	An indication indicating a right turn (i.e. bend arrow).
`slight right`	An indication indicating a slight right turn (i.e. slightly bend arrow).
`straight`	No dedicated indication is shown (i.e. straight arrow).
`slight left`	An indication indicating a slight left turn (i.e. slightly bend arrow).
`left`	An indication indicating a left turn (i.e. bend arrow).
`sharp left`	An indication indicating a sharp left turn (i.e. strongly bend arrow).

valid: a boolean flag indicating whether the lane is a valid choice in the current maneuver

Example

{
    "indications": ["left", "straight"],
    "valid": "false"
}

Intersection object

An intersection gives a full representation of any cross-way the path passes bay. For every step, the very first intersection (intersections[0]) corresponds to the location of the StepManeuver. Further intersections are listed for every cross-way until the next turn instruction.

Properties

location: A [longitude, latitude] pair describing the location of the turn.
bearings: A list of bearing values (e.g. [0,90,180,270]) that are available at the intersection. The bearings describe all available roads at the intersection. Values are between 0-359 (0=true north)
entry: A list of entry flags, corresponding in a 1:1 relationship to the bearings. A value of true indicates that the respective road could be entered on a valid route. false indicates that the turn onto the respective road would violate a restriction.
in: index into bearings/entry array. Used to calculate the bearing just before the turn. Namely, the clockwise angle from true north to the direction of travel immediately before the maneuver/passing the intersection. Bearings are given relative to the intersection. To get the bearing in the direction of driving, the bearing has to be rotated by a value of 180. The value is not supplied for depart maneuvers.
out: index into the bearings/entry array. Used to extract the bearing just after the turn. Namely, The clockwise angle from true north to the direction of travel immediately after the maneuver/passing the intersection. The value is not supplied for arrive maneuvers.
lanes: Array of Lane objects that denote the available turn lanes at the intersection. If no lane information is available for an intersection, the lanes property will not be present.

Example

{
    "location":[13.394718,52.543096],
    "in":0,
    "out":2,
    "bearings":[60,150,240,330],
    "entry":["false","true","true","true"]
    "lanes":{
        "indications": ["left", "straight"],
        "valid": "false"
    }
}

Waypoint object

Object used to describe waypoint on a route.

Properties

name Name of the street the coordinate snapped to
location Array that contains the [longitude, latitude] pair of the snapped coordinate
distance The distance of the snapped point from the original
hint Unique internal identifier of the segment (ephemeral, not constant over data updates) This can be used on subsequent request to significantly speed up the query and to connect multiple services. E.g. you can use the hint value obtained by the nearest query as hint values for route inputs.

Example

{
   "hint" : "KSoKADRYroqUBAEAEAAAABkAAAAGAAAAAAAAABhnCQCLtwAA_0vMAKlYIQM8TMwArVghAwEAAQH1a66g",
   "distance" : 4.152629,
   "name" : "Friedrichstraße",
   "location" : [
      13.388799,
      52.517033
   ]
}

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