Bus Route and Stop Methods
Bus stop information, route and schedule data, and bus positions.
JSON - Bus Position
Description
Returns bus positions for the given route, with an optional search radius. If no parameters are specified, all bus positions are returned.
Note that the RouteID parameter accepts only base route names and no variations, i.e.: use 10A instead of 10Av1 or 10Av2.
Bus positions are refreshed approximately every 20 to 30 7 to 10 seconds.
Response Elements
Element | Description |
---|---|
BusPositions | Array containing bus position information (BusPositions). |
DateTime | Date and time (Eastern Standard Time) of last position update. Will be in YYYY-MM-DDTHH:mm:ss format (e.g.: 2014-10-27T13:23:40). |
Deviation | Deviation, in minutes, from schedule. Positive values indicate that the bus is running late while negative ones are for buses running ahead of schedule. |
DirectionNum | Deprecated. Use the DirectionText for a customer-friendly description of direction. |
DirectionText | General direction of the trip, not the bus itself (e.g.: NORTH, SOUTH, EAST, WEST). |
Lat | Last reported Latitude of the bus. |
Lon | Last reported Longitude of the bus. |
RouteID | Base route name as shown on the bus. Note that the base route name could also refer to any variant, so a RouteID of 10A could refer to 10A, 10Av1, 10Av2, etc. |
TripEndTime | Scheduled end date and time (Eastern Standard Time) of the bus's current trip. Will be in YYYY-MM-DDTHH:mm:ss format (e.g.: 2014-10-27T13:17:00). |
TripHeadsign | Destination of the bus. |
TripID | Unique trip ID. This can be correlated with the data returned from the schedule-related methods. |
TripStartTime | Scheduled start date and time (Eastern Standard Time) of the bus's current trip. Will be in YYYY-MM-DDTHH:mm:ss format (e.g.: 2014-10-27T12:40:00). |
VehicleID | Unique identifier for the bus. This is usually visible on the bus itself. |
Request URL
Request parameters
(optional)
string
Base bus route, e.g.: 70, 10A.
(optional)
number
Center point Latitude, required if Longitude and Radius are specified.
(optional)
number
Center point Longitude, required if Latitude and Radius are specified.
(optional)
number
Radius (meters) to include in the search area, required if Latitude and Longitude are specified.
Request headers
Request body
Response 200
Default return code.
{
"BusPositions": [
{
"DateTime": "2014-10-27T13:23:40",
"Deviation": 7,
"DirectionNum": "10",
"DirectionText": "NORTH",
"Lat": 39.191525,
"Lon": -76.672821,
"RouteID": "B30",
"TripEndTime": "2014-10-27T13:17:00",
"TripHeadsign": "BWI LT RAIL STA",
"TripID": "6794838",
"TripStartTime": "2014-10-27T12:40:00",
"VehicleID": "6217"
},
{
"DateTime": "2014-10-27T13:23:19",
"Deviation": -1,
"DirectionNum": "12",
"DirectionText": "SOUTH",
"Lat": 39.030003,
"Lon": -76.948868,
"RouteID": "B30",
"TripEndTime": "2014-10-27T13:29:00",
"TripHeadsign": "GREENBELT STA",
"TripID": "6794867",
"TripStartTime": "2014-10-27T12:53:00",
"VehicleID": "6215"
},
{
"DateTime": "2014-10-27T13:24:00",
"Deviation": 2,
"DirectionNum": "10",
"DirectionText": "NORTH",
"Lat": 39.011429,
"Lon": -76.893158,
"RouteID": "B30",
"TripEndTime": "2014-10-27T13:57:00",
"TripHeadsign": "BWI LT RAIL STA",
"TripID": "6794839",
"TripStartTime": "2014-10-27T13:20:00",
"VehicleID": "6213"
}
]
}
Code samples
@ECHO OFF
curl -v -X GET "https://api.wmata.com/Bus.svc/json/jBusPositions?RouteID=70&Lat={number}&Lon={number}&Radius={number}"
-H "api_key: {subscription key}"
--data-ascii "{body}"
using System;
using System.Net.Http.Headers;
using System.Text;
using System.Net.Http;
using System.Web;
namespace CSHttpClientSample
{
static class Program
{
static void Main()
{
MakeRequest();
Console.WriteLine("Hit ENTER to exit...");
Console.ReadLine();
}
static async void MakeRequest()
{
var client = new HttpClient();
var queryString = HttpUtility.ParseQueryString(string.Empty);
// Request headers
client.DefaultRequestHeaders.Add("api_key", "{subscription key}");
// Request parameters
queryString["RouteID"] = "70";
queryString["Lat"] = "{number}";
queryString["Lon"] = "{number}";
queryString["Radius"] = "{number}";
var uri = "https://api.wmata.com/Bus.svc/json/jBusPositions?" + queryString;
var response = await client.GetAsync(uri);
}
}
}
// // This sample uses the Apache HTTP client from HTTP Components (http://hc.apache.org/httpcomponents-client-ga/)
import java.net.URI;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
public class JavaSample
{
public static void main(String[] args)
{
HttpClient httpclient = HttpClients.createDefault();
try
{
URIBuilder builder = new URIBuilder("https://api.wmata.com/Bus.svc/json/jBusPositions");
builder.setParameter("RouteID", "70");
builder.setParameter("Lat", "{number}");
builder.setParameter("Lon", "{number}");
builder.setParameter("Radius", "{number}");
URI uri = builder.build();
HttpGet request = new HttpGet(uri);
request.setHeader("api_key", "{subscription key}");
// Request body
StringEntity reqEntity = new StringEntity("{body}");
request.setEntity(reqEntity);
HttpResponse response = httpclient.execute(request);
HttpEntity entity = response.getEntity();
if (entity != null)
{
System.out.println(EntityUtils.toString(entity));
}
}
catch (Exception e)
{
System.out.println(e.getMessage());
}
}
}
<!DOCTYPE html>
<html>
<head>
<title>JSSample</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
</head>
<body>
<script type="text/javascript">
$(function() {
var params = {
"api_key": "{subscription key}",
// Request parameters
"RouteID": "70",
"Lat": "{number}",
"Lon": "{number}",
"Radius": "{number}",
};
$.ajax({
url: "https://api.wmata.com/Bus.svc/json/jBusPositions?" + $.param(params),
type: "GET",
})
.done(function(data) {
alert("success");
})
.fail(function() {
alert("error");
});
});
</script>
</body>
</html>
#import <Foundation/Foundation.h>
int main(int argc, const char * argv[])
{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSString* path = @"https://api.wmata.com/Bus.svc/json/jBusPositions";
NSArray* array = @[
// Request parameters
@"entities=true",
@"RouteID=70",
@"Lat={number}",
@"Lon={number}",
@"Radius={number}",
];
NSString* string = [array componentsJoinedByString:@"&"];
path = [path stringByAppendingFormat:@"?%@", string];
NSLog(@"%@", path);
NSMutableURLRequest* _request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:path]];
[_request setHTTPMethod:@"GET"];
// Request headers
[_request setValue:@"{subscription key}" forHTTPHeaderField:@"api_key"];
// Request body
[_request setHTTPBody:[@"{body}" dataUsingEncoding:NSUTF8StringEncoding]];
NSURLResponse *response = nil;
NSError *error = nil;
NSData* _connectionData = [NSURLConnection sendSynchronousRequest:_request returningResponse:&response error:&error];
if (nil != error)
{
NSLog(@"Error: %@", error);
}
else
{
NSError* error = nil;
NSMutableDictionary* json = nil;
NSString* dataString = [[NSString alloc] initWithData:_connectionData encoding:NSUTF8StringEncoding];
NSLog(@"%@", dataString);
if (nil != _connectionData)
{
json = [NSJSONSerialization JSONObjectWithData:_connectionData options:NSJSONReadingMutableContainers error:&error];
}
if (error || !json)
{
NSLog(@"Could not parse loaded json with error:%@", error);
}
NSLog(@"%@", json);
_connectionData = nil;
}
[pool drain];
return 0;
}
<?php
// This sample uses the Apache HTTP client from HTTP Components (http://hc.apache.org/httpcomponents-client-ga/)
require_once 'HTTP/Request2.php';
$request = new Http_Request2('https://api.wmata.com/Bus.svc/json/jBusPositions');
$url = $request->getUrl();
$headers = array(
// Request headers
'api_key' => '{subscription key}',
);
$request->setHeader($headers);
$parameters = array(
// Request parameters
'RouteID' => '70',
'Lat' => '{number}',
'Lon' => '{number}',
'Radius' => '{number}',
);
$url->setQueryVariables($parameters);
$request->setMethod(HTTP_Request2::METHOD_GET);
// Request body
$request->setBody("{body}");
try
{
$response = $request->send();
echo $response->getBody();
}
catch (HttpException $ex)
{
echo $ex;
}
?>
########### Python 2.7 #############
import httplib, urllib, base64
headers = {
# Request headers
'api_key': '{subscription key}',
}
params = urllib.urlencode({
# Request parameters
'RouteID': '70',
'Lat': '{number}',
'Lon': '{number}',
'Radius': '{number}',
})
try:
conn = httplib.HTTPSConnection('api.wmata.com')
conn.request("GET", "/Bus.svc/json/jBusPositions?%s" % params, "{body}", headers)
response = conn.getresponse()
data = response.read()
print(data)
conn.close()
except Exception as e:
print("[Errno {0}] {1}".format(e.errno, e.strerror))
####################################
########### Python 3.2 #############
import http.client, urllib.request, urllib.parse, urllib.error, base64
headers = {
# Request headers
'api_key': '{subscription key}',
}
params = urllib.parse.urlencode({
# Request parameters
'RouteID': '70',
'Lat': '{number}',
'Lon': '{number}',
'Radius': '{number}',
})
try:
conn = http.client.HTTPSConnection('api.wmata.com')
conn.request("GET", "/Bus.svc/json/jBusPositions?%s" % params, "{body}", headers)
response = conn.getresponse()
data = response.read()
print(data)
conn.close()
except Exception as e:
print("[Errno {0}] {1}".format(e.errno, e.strerror))
####################################
require 'net/http'
uri = URI('https://api.wmata.com/Bus.svc/json/jBusPositions')
query = URI.encode_www_form({
# Request parameters
'RouteID' => '70',
'Lat' => '{number}',
'Lon' => '{number}',
'Radius' => '{number}'
})
if uri.query && uri.query.length > 0
uri.query += '&' + query
else
uri.query = query
end
request = Net::HTTP::Get.new(uri.request_uri)
# Request headers
request['api_key'] = '{subscription key}'
# Request body
request.body = "{body}"
response = Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
http.request(request)
end
puts response.body