i dun think 502A evening trip will work
this is due to evening jam at clementi ave 6 heading twrds PIE
jurong (like what service 185 exprienced)
especially if it's between 5.45-6.30 or 7pm
though it is fast actually but still time is precious
unless the route is something like this:
AYE-clementi ave 6-commonwealth ave west-toh guan
rd- PIE- ave 2 - Boon lay ave
or
AYE-corporation rd-Boon lay ave lol
502A evening trip would work very well .
This part you no need to worry ....
Cause Since the Enhanced 502 introduced in 23 Dec 2005 ...
The bonus thing is this : " This service may ply different
routes along the express sector subject to traffic conditions"
This gives the driver to choose any route he wants to get to the
destination during the Non Stop Express Sector ...
There have been cases .. 502A twds Orchard suddenly uses
PIE> Toh Guan Road > Boon Lay way > Holland to get
to orchard
I have also seen 502 on its return trip from stevens road use
bukit timah rd back to boon lay way
seen 502B use PIE towards orchard
etc many variations
Normally OCC would inform them if there is a jam and then
bc uses alternative route to avoid jam .. or the bc takes initative
to use alternative route when stuck in jam ...
so there is no fixed route in the express sector unlike
185 bo bian die die have to use Clementi ave 6 cos 1st stop
is immediately after jurong town hall exit ..