The role of TWSI’s

Published in TWSI Blog
  • on Thursday, 21 May 2015


How tactile walking surface indicators make streets safer

According to the Canadian National Institute of the Blind (CNIB), half a million Canadians are living with vision loss, with more than 50,000 more losing their sight every year. TWSI's play an instrumental role in improving accessibility. 

Tactile Walking Surface Indicators(TWSI) act as a warning device to alert those with visual impairments of upcoming street crossings. As shown above, the plates consist of uniform sized, spaced domes installed on depressed ramps at public sidewalk crossings.

When a person with vision loss walks down the sidewalk using a long white cane, they will detect the domes on the TWSI before stepping on it. Once detected, they recognize that they’ve reached a transition from sidewalk to road and will adhere to their other training to safely cross the road.

Landmark by Crozier, a division of Crozier Enterprises and the Canadian supplier for construction castings and quality site furnishings, is a proud distributor of Neenah Foundry TWSI’s. Below is an example of one of our Neenah TWSI installs at the Town Hall in Oakville, ON. See more pictures HERE.

Contact Landmark by Crozier to find out how you can get started on installing the chosen standard’s in your community.

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About Neenah Foundry:Since 1872, Neenah Foundry has been known for consistent quality, functional performance and design aesthetics. They offer an extensive selection of castings for construction and municipal use including manhole covers and frames, catch basins and curb inlets, cast iron downspouts, airport and port castings, bridge scuppers and many other specialty products.