taken from the TTC Subway Rider Efficiency Guide
http://ttcrider.ca/tips.php#tsreg
The orange dot on six-car subway platforms can be used as an easy way to remember where to wait for the train on the platform, so that when you get to your destination station, you're lined up near the stairs or escalators. The orange dot is attached to the wall in each subway station and lines up to approximately the 3rd car, 3rd door of each train.
Destination stations where the orange dot is useful:
Bathurst (eastbound and westbound)
Bay (eastbound and westbound)
Broadview (eastbound)
Castle Frank (eastbound)
Chester (eastbound and westbound)
Christie (eastbound and westbound)
Coxwell (westbound)
Davisville (eastbound and westbound)
Donlands (eastbound)
Dufferin (eastbound and westbound)
Dupont (northbound and southbound)
Eglinton (northbound and southbound)
Finch (northbound and southbound)
Islington (eastbound and westbound)
Jane (eastbound and westbound)
Kennedy
King (northbound and southbound)
Main Street (eastbound)
North York Centre (southbound)
Osgoode (northbound and southbound)
Pape (eastbound and westbound)
Queen's Park (northbound)
Runnymede (eastbound and westbound)
Sheppard (northbound and southbound)
Sherbourne (westbound)
St. Andrew (northbound)
St. George (eastbound, westbound, northbound and southbound)
St. Patrick (southbound)
Union (westbound — towards University line)
Victoria Park (eastbound)
Warden (eastbound and westbound)
Wellesley (southbound)
Wilson (northbound and southbound)
Yonge (westbound)
A simple way to remember which stations are orange dot stations is to remember them as an acronym:
BBBCCCCDDDDDEFIJKKMNOPQRSSSSSUVWWWY
Pronounce it out like a word and remember it by the way it sounds.
— submitted by Hayley Watson