New street signs for Christchurch

While reading the news, I came across this article about New street signs for visitor's in Christchurch.

I found it interesting because next year in summer I will be going to Christchurch for a whole entire week for something like a camp.

I would like to know why did they have to do it now?

I am surprised that they decided to do this.

here is the link to it New Street Signs for Christchurch