GTFS

GTFS and GTFS-RT feeds.

Rail RT Trip Updates

Description

GTFS RT 2.0 trip updates feed for WMATA rail. Please refer to the GTFS RT trip updates reference for details on this operation. Additional notes to supplement the referenced documentation are listed below.

As this is a binary feed, using the Developer Portal's Try it feature will not work as expected.


TripDescriptor

FieldWMATA Notes
schedule_relationshipThe relation between this trip and the static schedule.

If TripDescriptor.schedule_relationship = CANCELED, then there will be no StopTimeUpdate messages included.

If TripDescriptor.schedule_relationship = ADDED, a trip will be added in addition to a running schedule with trip_id other than the trips presented in the schedule.

If TripDescriptor.schedule_relationship = DUPLICATED , trips will have the same value for trip_id as other SCHEDULED trips; if so, they will have a different value for start_time.

ScheduleRelationship (as part of TripDescriptor)

ValueWMATA Notes
SCHEDULEDTrip that is running in accordance with its GTFS schedule, or is close enough to the scheduled trip to be associated with it.
ADDEDAn extra trip that was added in addition to a running schedule, for example, to cover a trip not present in the schedule. ADDED trips will have a new trip_id not present in the schedule.
DUPLICATEDAn extra trip that was added in addition to a running schedule, for example, to replace a broken vehicle or to respond to sudden passenger load. Used with TripUpdate.TripProperties.trip_id, TripUpdate.TripProperties.start_date, and TripUpdate.TripProperties.start_time to copy an existing trip from static GTFS but start at a different service date and/or time. Duplicating a trip is allowed if the service related to the original trip in the schedule is operating within the next 30 days.
UNSCHEDULEDA trip that is running with no schedule associated to it, for example, if there is no schedule at all.
CANCELEDA trip that existed in the schedule but was removed.

VehicleDescriptor

FieldWMATA Notes
idUniquely identifiable internal train identifier.

WMATA Example: 422
labelNon-unique train identifier, often used by WMATA's Rail Scheduling and Operations Teams, as well as over open radio communication.

WMATA Example: 213
license_plateNumber of cars. Can sometimes be 0 when there is no data available.

WMATA Example: 8

StopTimeUpdate

FieldWMATA Notes
arrivalTiming information for a single predicted arrival event. Not available for start of the trip.
departureTiming information for a single predicted departure event. Only available for start of the trip.

Try it

Request URL

Request headers

string
Subscription key which provides access to this API. Found in your Profile.

Request body

Code samples

@ECHO OFF

curl -v -X GET "https://api.wmata.com/gtfs/rail-gtfsrt-tripupdates.pb"
-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}");

            var uri = "https://api.wmata.com/gtfs/rail-gtfsrt-tripupdates.pb?" + 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/gtfs/rail-gtfsrt-tripupdates.pb");


            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
        };
      
        $.ajax({
            url: "https://api.wmata.com/gtfs/rail-gtfsrt-tripupdates.pb?" + $.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/gtfs/rail-gtfsrt-tripupdates.pb";
    NSArray* array = @[
                         // Request parameters
                         @"entities=true",
                      ];
    
    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/gtfs/rail-gtfsrt-tripupdates.pb');
$url = $request->getUrl();

$headers = array(
    // Request headers
    'api_key' => '{subscription key}',
);

$request->setHeader($headers);

$parameters = array(
    // Request parameters
);

$url->setQueryVariables($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({
})

try:
    conn = httplib.HTTPSConnection('api.wmata.com')
    conn.request("GET", "/gtfs/rail-gtfsrt-tripupdates.pb?%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({
})

try:
    conn = http.client.HTTPSConnection('api.wmata.com')
    conn.request("GET", "/gtfs/rail-gtfsrt-tripupdates.pb?%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/gtfs/rail-gtfsrt-tripupdates.pb')

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