A platform edge at a transit station marked with an attention TWSI.
Platform edges including, but not limited to, those found on train platforms and ferry docks should be clearly marked with TWSIs. The TWSI should be parallel to the platform edge, extend its full length and have a depth of 600 – 650 mm.
The material used for a TWSI and its placement should be consistent throughout a location. Refer to the Tactile Walking Surface Indicators section for recommended specifications.
