Irule redirect in F5 LTM

I believe that something like below could help you:

ltm rule locale_redirect {

when HTTP_REQUEST {  

    if { ([string tolower [HTTP::uri]] eq "en_CA") } {

    HTTP::redirect "https://www.test.com/en/travel/car-unavailable.html"

    }   

   elseif { ([string tolower [HTTP::uri]] eq "fr_FR") } {

    HTTP::redirect "https://test.com/fr/voyages/voiture-indisponible.html"

    }

}

}