If a traveller runs out of funds or his means of transportation stops functioning, in the event that the purpose of his journey is not sinful and he cannot reach his destination by borrowing or selling something, he can receive zakat even if he is not a poor person in his home town (waṭan). However, if he can procure funds for his journey at another place by borrowing money or selling something, he can receive zakat up to the amount that will enable him to get to that place.
And based on obligatory precaution, if he can raise money by selling or renting some property in his home town for the expenses of his journey, he must not receive zakat.