My friend Rob Taylor shared a very useful utility for checking the Bus Arrival Updates in Seoul for the bus stop near you. You can also check the start and end timing for a particular bus #. This is  a very important utility for anyone who uses bus for daily commute.

Click the link below to use the tool -
http://m.seoul.go.kr/eng/topmenu.do

Using this tool is very simple and let me explain this to you with an example.

If you are staying in Haebangchon then..

Step 1 – Enter the Bust station Number as 03150 (yes you have to know the bus station number) in the ‘Search by Station Number’ box inthe Bus Arrival Updates section.

Step 2 - Then click the Bus Station Link (in this case Yongsan Hanshin, the name of the bus station)

Step 3 - And then click the bus # for more details (in this case, #143, #401 & #406).