What is so special about the traffic light in the foreground of this picture?

Its the vertical traffic light, not the overhanging horizontal one.....

I remembered that so many years ago when I was having an evening stroll along West Coast Highway with my son, who was then about 5 or 6 years old, we stood at the same spot where I took this picture.

I then pointed to him the traffic light (can't tell whether its the same one) .....and taught him his first lesson in recognising color. Red, yellow, green and the basic traffic rules for motorists and pedestrians which different road users have to obey. He was so excited about learning something new that night. He kept pointing to objects and telling me their color, particularly red, yellow and green.

It comforts me to know that he is not color blind; and is keen to learn new things which will benefit him in the future. Life is a never ending journey in learning; until life itself ends.

I am sure this lesson was later reinforced by his teachers in primary school....but I think lessons learned in real life, beyond textbook learning outside school is equally important.