Uploaded on 2016-04-27 by Lavenpara

![two routes][1] ![travelling time and walking distance][2] More often than not my priority is time, so I will check the timetable of the bus and make a comparison. If the next bus comes within 13-6=7 min I usually choose to wait for it. But in practice I prefer to set the threshold at 5 min because I walk fast and it's beneficial to my health to walk especially if the weather is good~ [1]: https://edxuploads.s3.amazonaws.com/14617891364638673.png [2]: https://edxuploads.s3.amazonaws.com/14617891454943782.jpg