as expected, 852. up to 30min freq during off-peak hours. i've
waited for a whopping 45min sharp for once during peak
hour...worse, 1014L came.
You don't want to wait? Can... Take 851 from Yishun Int to
Marymount Road, then take 74 to Bukit Timah Road and 66/157/174 to
Bukit Batok there. I think 852 only helps (provides alternative) to
ease the crowd of 66, 157, 174, 851 etc...