Google direction api request invalid in ios5

Question

Here is my request: https://maps.googleapis.com/maps/api/directions/json?origin=49.276951,-123.128559&destination=49.277874,-122.912404&mode=transit&sensor=false The result is: { "routes" : [], "status" : "INVALID_REQUEST" }

It worked before, but it does not work when i used it today. why is that? Note: it works fine when i change it to mode=walking

Answer 1

https://maps.googleapis.com/maps/api/directions/json?origin=49.276951,-123.128559&destination=49.261566,-123.138399&mode=transit&sensor=false&departure_time=1346197500

The above request works. We can solve this problem by adding departure_time parameter since Google may updated the direction api and set departure time as a mandatory parameter.