Tap For Longer Crossing Time

Well, I've heard of this in the news, but actually saw one today myself! What is it? A specially configurated traffic light suited for the elderly.

With a senior transport concession card in hand, a senior citizen can tap this against the traffic light to give them a bit more time to cross the road.

According to the 28 Sep 2009 news report, "currently, the Green Man stays on for 17 seconds at a four-lane crossing, and 21 seconds for a six-lane crossing".


I think it's a pretty considerate idea, but whether or not it'll work remains unseen.
Anymore with a similar system in your home country?