Help please! I need to know this font

I am working on a project and am looking for a font that mimics this australian road sign. http://images.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thum b/b/b2/Australian_National_Route_M80.svg/748px-Australian_National_Route_M80.svg.png&imgre furl=http://commons.wikimedia.org/wiki/Image:Australian_National_Route_M80.svg&h=600&w=748 &sz=41&hl=en&start=19&usg=__8P3-uCdlvk5IKO4fngSTcX8wRJE=&tbnid=qGfQMbAkt4V-9M:&tbnh=113&tb nw=141&prev=/images%3Fq%3Dm80%26gbv%3D2%26hl%3Den%26sa%3DG

Sorry for the long link.

thanks in advance.