Reputation: 97
Google Directions API transit returns always "ZERO_RESULTS"
i'm developing an app that use google API to obtain a transport solution to reach a location at a desired time.
My code that call google API work perfectly with "driving" and "walking" travel mode, but with "transit" and "bicycling" the response is always marked with the status "ZERO_RESULTS" and no routes is calculated. This, by the google documentation, means that transit and bicycling are not available in the country where the solution must be calculated. I tried with several country and I always had the same result, I tried also with the Google example (for transit) in the overview and it doesn't work.
The parameters that I pass with the HTTPS request are: origin, destination, travel mode, arrival_time. The first thing that I tried is to change arrival_time, in case the value is referred to the past or to a too distant future, but it doesn't work.
In case I don't pass "arrival_time" the response is perfect, but I don't understand because in the Google Documentation is clear that arrival_time is a possible argument of the https request also with the transit travel mode. Without this argument the request is useless for my goal.
The curious thing is that if i pass "transit" (with arrival or departure time) the response is this:
{
"available_travel_modes" : [ "DRIVING", "WALKING" ],
"geocoded_waypoints" : [
{
"geocoder_status" : "OK",
"place_id" : "ChIJu46S-ZZhLxMROG5lkwZ3D7k",
"types" : [ "locality", "political" ]
},
{
"geocoder_status" : "OK",
"place_id" : "ChIJ53USP0nBhkcRjQ50xhPN_zw",
"types" : [ "locality", "political" ]
}
],
"routes" : [],
"status" : "ZERO_RESULTS"
}
And if I pass "bicycling" (with all the other parameters unchanged):
{
"available_travel_modes" : [ "DRIVING", "WALKING", "TRANSIT" ],
"geocoded_waypoints" : [
{
"geocoder_status" : "OK",
"place_id" : "ChIJu46S-ZZhLxMROG5lkwZ3D7k",
"types" : [ "locality", "political" ]
},
{
"geocoder_status" : "OK",
"place_id" : "ChIJ53USP0nBhkcRjQ50xhPN_zw",
"types" : [ "locality", "political" ]
}
],
"routes" : [],
"status" : "ZERO_RESULTS"
}
So in the second case the API said that TRANSIT is available and this doesn't make sense at all!
The format of the location that I use is geographical coordinates to avoid cases of ambiguity.
Hope that I give enough information to make you able to help me.
EDIT: sorry, i was thinking that my post was clear enough. I use Google Directions API: https://developers.google.com/maps/documentation/directions/
My problem is with "transit" and "bicycling" as travel mode and is not a code problem, but the problem appears at the level of https response, even with the google example for "transit" that can be found on the overview i obtain a "ZERO_RESULTS" response. This is the URL of the example:
https://maps.googleapis.com/maps/api/directions/json?origin=75+9th+Ave+New+York,+NY&destination=MetLife+Stadium+1+MetLife+Stadium+Dr+East+Rutherford,+NJ+07073&mode=transit&arrival_time=1391374800&key=YOUR_API_KEY
And here is the two URL that get me the two response that I copied above: with transit:
https://maps.googleapis.com/maps/api/directions/json?origin=Rome&destination=Milan&mode=transit&arrival_time=1513162800000&key=++API_KEY++
and with bicycling:
https://maps.googleapis.com/maps/api/directions/json?origin=Rome&destination=Milan&mode=transit&arrival_time=1513162800000&key=++API_KEY++
in the code I use for origin and destination geographical coordinates as here:
https://maps.googleapis.com/maps/api/directions/json?origin=41.9027835,12.496365500000024&destination=45.4642035,9.189981999999986&mode=transit&arrival_time=1513162800000&key=++API_KEY++
the only difference is that google do not recognize geocoded waypoints:
{
"available_travel_modes" : [ "DRIVING", "WALKING" ],
"geocoded_waypoints" : [ {}, {} ],
"routes" : [],
"status" : "ZERO_RESULTS"
}
If I use "driving" as travel mode this worked:
https://maps.googleapis.com/maps/api/directions/json?origin=41.9027835,12.496365500000024&destination=45.4642035,9.189981999999986&mode=driving&arrival_time=1513162800000&key=++API_KEY++
{
"geocoded_waypoints" : [
{
"geocoder_status" : "OK",
"place_id" : "EjJQaWF6emEgZGVsbGEgUmVwdWJibGljYSwgMTAsIDAwMTg1IFJvbWEgUk0sIEl0YWxpYQ",
"types" : [ "street_address" ]
},
{
"geocoder_status" : "OK",
"place_id" : "ChIJC5u9LazGhkcRXAZQFNDTpKc",
"types" : [ "street_address" ]
}
],
"routes" : [
{
"bounds" : {
"northeast" : {
"lat" : 45.4731019,
"lng" : 12.6177051
},
"southwest" : {
"lat" : 41.9028523,
"lng" : 9.1839517
}
},
"copyrights" : "Dati mappa ©2017 Google",
"legs" : [
{
"distance" : {
"text" : "573 km",
"value" : 572600
},
"duration" : {
"text" : "5 ore 51 min",
"value" : 21069
},
"end_address" : "Via Silvio Pellico, 2, 20121 Milano MI, Italia",
"end_location" : {
"lat" : 45.46495119999999,
"lng" : 9.1892874
},
"start_address" : "Piazza della Repubblica, 10, 00185 Roma RM, Italia",
"start_location" : {
"lat" : 41.9028523,
"lng" : 12.4964704
},
"steps" : [
{
"distance" : {
"text" : "93 m",
"value" : 93
},
"duration" : {
"text" : "1 min",
"value" : 19
},
"end_location" : {
"lat" : 41.9035781,
"lng" : 12.4959908
},
"html_instructions" : "Procedi in direzione \u003cb\u003enord\u003c/b\u003e da \u003cb\u003ePiazza della Repubblica\u003c/b\u003e verso \u003cb\u003eVia Giuseppe Romita\u003c/b\u003e",
"polyline" : {
"points" : "ycw~F}ugkAU?I@E@E@a@RG@EDED_@d@OP"
},
"start_location" : {
"lat" : 41.9028523,
"lng" : 12.4964704
},
"travel_mode" : "DRIVING"
},
// cut
{
"distance" : {
"text" : "52 m",
"value" : 52
},
"duration" : {
"text" : "1 min",
"value" : 14
},
"end_location" : {
"lat" : 45.4665738,
"lng" : 9.1889772
},
"html_instructions" : "Continua su \u003cb\u003eVia Santa Margherita\u003c/b\u003e",
"polyline" : {
"points" : "ogotGoxaw@`@`@j@h@"
},
"start_location" : {
"lat" : 45.4669622,
"lng" : 9.189359399999999
},
"travel_mode" : "DRIVING"
},
{
"distance" : {
"text" : "0,2 km",
"value" : 192
},
"duration" : {
"text" : "1 min",
"value" : 87
},
"end_location" : {
"lat" : 45.46495119999999,
"lng" : 9.1892874
},
"html_instructions" : "Svolta a \u003cb\u003esinistra\u003c/b\u003e e prendi \u003cb\u003eVia Silvio Pellico\u003c/b\u003e",
"maneuver" : "turn-left",
"polyline" : {
"points" : "aeotGcvaw@Xw@DCBAxC@~A?d@A"
},
"start_location" : {
"lat" : 45.4665738,
"lng" : 9.1889772
},
"travel_mode" : "DRIVING"
}
],
"traffic_speed_entry" : [],
"via_waypoint" : []
}
],
"overview_polyline" : {
"points" : "//collapsed//"
},
"summary" : "A1/E35 e A1",
"warnings" : [],
"waypoint_order" : []
}
],
"status" : "OK"
}
and if I use "transit" without an arrival time it works:
https://maps.googleapis.com/maps/api/directions/json?origin=41.9027835,12.496365500000024&destination=45.4642035,9.
189981999999986&mode=transit&key=++API_KEY++
and:
{
"geocoded_waypoints" : [
{
"geocoder_status" : "OK",
"place_id" : "EjJQaWF6emEgZGVsbGEgUmVwdWJibGljYSwgMTAsIDAwMTg1IFJvbWEgUk0sIEl0YWxpYQ",
"types" : [ "street_address" ]
},
{
"geocoder_status" : "OK",
"place_id" : "ChIJRYxePKzGhkcRsgPwamn2Pfo",
"types" : [ "street_address" ]
}
],
"routes" : [
{
"bounds" : {
"northeast" : {
"lat" : 45.4969308,
"lng" : 12.5528041
},
"southwest" : {
"lat" : 41.892252,
"lng" : 9.188611
}
},
"copyrights" : "Dati mappa ©2017 Google",
"legs" : [
{
"arrival_time" : {
"text" : "13:55",
"time_zone" : "Europe/Rome",
"value" : 1513169733
},
"departure_time" : {
"text" : "10:10",
"time_zone" : "Europe/Rome",
"value" : 1513156231
},
"distance" : {
"text" : "571 km",
"value" : 571467
},
"duration" : {
"text" : "3 ore 45 min",
"value" : 13502
},
"end_address" : "Piazza del Duomo, 1, 20121 Milano MI, Italia",
"end_location" : {
"lat" : 45.4639037,
"lng" : 9.188611
},
"start_address" : "Piazza della Repubblica, 10, 00185 Roma RM, Italia",
"start_location" : {
"lat" : 41.9028429,
"lng" : 12.4964793
},
"steps" : [
{
"distance" : {
"text" : "0,1 km",
"value" : 102
},
"duration" : {
"text" : "1 min",
"value" : 87
},
"end_location" : {
"lat" : 41.902193,
"lng" : 12.4958041
},
"html_instructions" : "Cammina fino a Repubblica",
"polyline" : {
"points" : "wcw~F_vgkA@CBADABA@A@?B?D?B?B@B?B@BBB@@BBBDH@D@H@@?D?BDRBL?@DXBLBJDHBFVM"
},
"start_location" : {
"lat" : 41.9028429,
"lng" : 12.4964793
},
"steps" : [
{
"distance" : {
"text" : "54 m",
"value" : 54
},
"duration" : {
"text" : "1 min",
"value" : 49
},
"end_location" : {
"lat" : 41.9024775,
"lng" : 12.4962611
},
"html_instructions" : "Procedi in direzione \u003cb\u003esudest\u003c/b\u003e verso \u003cb\u003ePiazza della Repubblica\u003c/b\u003e",
"polyline" : {
"points" : "wcw~F_vgkA@CBADABA@A@?B?D?B?B@B?B@BBB@@BBBDH@D@H@@?D?B"
},
"start_location" : {
"lat" : 41.9028429,
"lng" : 12.4964793
},
"travel_mode" : "WALKING"
},
{
"distance" : {
"text" : "48 m",
"value" : 48
},
"duration" : {
"text" : "1 min",
"value" : 38
},
"end_location" : {
"lat" : 41.902193,
"lng" : 12.4958041
},
"html_instructions" : "Esci dalla rotonda e prendi \u003cb\u003ePiazza della Repubblica\u003c/b\u003e",
"polyline" : {
"points" : "oaw~FstgkADRBL?@DXBLBJDHBFVM"
},
"start_location" : {
"lat" : 41.9024775,
"lng" : 12.4962611
},
"travel_mode" : "WALKING"
}
],
"travel_mode" : "WALKING"
},
{
"distance" : {
"text" : "0,4 km",
"value" : 437
},
"duration" : {
"text" : "1 min",
"value" : 46
},
"end_location" : {
"lat" : 41.9011732,
"lng" : 12.4996019
},
"html_instructions" : "Metropolitana verso Anagnina",
"polyline" : {
"points" : "u_w~FwqgkAeBIBoA@I|ByM~CmELR"
},
"start_location" : {
"lat" : 41.902193,
"lng" : 12.4958041
},
"transit_details" : {
"arrival_stop" : {
"location" : {
"lat" : 41.9011732,
"lng" : 12.4996019
},
"name" : "Termini"
},
"arrival_time" : {
"text" : "10:12",
"time_zone" : "Europe/Rome",
"value" : 1513156353
},
"departure_stop" : {
"location" : {
"lat" : 41.902193,
"lng" : 12.4958041
},
"name" : "Repubblica"
},
"departure_time" : {
"text" : "10:11",
"time_zone" : "Europe/Rome",
"value" : 1513156307
},
"headsign" : "Anagnina",
"line" : {
"agencies" : [
{
"name" : "Atac",
"phone" : "011 39 06 57003",
"url" : "http://www.atac.roma.it/"
}
],
"color" : "#e27439",
"name" : "Metro A",
"short_name" : "MEA",
"url" : "http://muovi.roma.it/percorso/js?query=MEA&cl=1",
"vehicle" : {
"icon" : "//maps.gstatic.com/mapfiles/transit/iw2/6/subway2.png",
"local_icon" : "//maps.gstatic.com/mapfiles/transit/iw2/6/it-metro.png",
"name" : "Metropolitana",
"type" : "SUBWAY"
}
},
"num_stops" : 1
},
"travel_mode" : "TRANSIT"
},
{
"distance" : {
"text" : "2,6 km",
"value" : 2641
},
"duration" : {
"text" : "6 min",
"value" : 330
},
"end_location" : {
"lat" : 45.4639037,
"lng" : 9.188611
},
"html_instructions" : "Metropolitana verso San Donato",
"polyline" : {
"points" : "//collapsed//"
},
"start_location" : {
"lat" : 45.4844397,
"lng" : 9.202612799999999
},
"transit_details" : {
"arrival_stop" : {
"location" : {
"lat" : 45.4639037,
"lng" : 9.188611
},
"name" : "Duomo"
},
"arrival_time" : {
"text" : "13:55",
"time_zone" : "Europe/Rome",
"value" : 1513169730
},
"departure_stop" : {
"location" : {
"lat" : 45.4844397,
"lng" : 9.202612799999999
},
"name" : "Centrale FS"
},
"departure_time" : {
"text" : "13:50",
"time_zone" : "Europe/Rome",
"value" : 1513169400
},
"headsign" : "San Donato",
"line" : {
"agencies" : [
{
"name" : "COMUNE DI MILANO",
"phone" : "011 39 02 0202",
"url" : "http://www.muoversi.milano.it/"
}
],
"color" : "#ffea00",
"name" : "M3 - Linea Gialla",
"short_name" : "3",
"vehicle" : {
"icon" : "//maps.gstatic.com/mapfiles/transit/iw2/6/subway2.png",
"local_icon" : "//maps.gstatic.com/mapfiles/transit/iw2/6/it-metro.png",
"name" : "Metropolitana",
"type" : "SUBWAY"
}
},
"num_stops" : 4
},
"travel_mode" : "TRANSIT"
}
],
"traffic_speed_entry" : [],
"via_waypoint" : []
}
],
"overview_polyline" : {
"points" : "//collapsed//"
},
"summary" : "",
"warnings" : [
"Le indicazioni per tragitti a piedi sono in versione beta. Presta attenzione – questo percorso potrebbe non disporre di marciapiede o aree pedonali."
],
"waypoint_order" : []
}
],
"status" : "OK"
}
Upvotes: 5
Views: 7143
Answers (2)
Reputation: 11
In case it helps someone else, I also found that setting a departure_time too far in the future (more than a year in my case) led to a "ZERO_RESULTS" response. Making it closer to the present fixed this.
Upvotes: 1
Reputation: 32110
The issue in your request is the value that you pass as an arrival_time parameter. Please note that this value must be in seconds:
arrival_time — Specifies the desired time of arrival for transit directions, in seconds since midnight, January 1, 1970 UTC. You can specify either departure_time or arrival_time, but not both. Note that arrival_time must be specified as an integer.
https://developers.google.com/maps/documentation/directions/intro#DirectionsRequests
You are passing milliseconds 1513162800000 that corresponds to 03/22/49920 @ 8:00am (UTC), the correct value is 1513162800 that corresponds to 12/13/2017 @ 11:00am (UTC).
The request should be:
https://maps.googleapis.com/maps/api/directions/json?origin=41.9027835%2C12.496365500000024&destination=45.4642035%2C9.189981999999986&mode=transit&arrival_time=1513162800&key=YOUR_API_KEY
The same request in Directions calculator:
I hope this helps!
Upvotes: 4
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