PT21 SG I personally thk that Service 51 from JE to HG south is the longest route in Singapore. My friend know of one Service 51 driver which drive 9109M say that, the time given to reach HG south from JE Int, is 2 Hours
tranquilice SG Service 51 may be amended to other place or terminates at Hougang Central (Hougang South interchange will be demolished) after the NEL starts.