You won't believe it but it depends the country. There's "one and only" Spanish language used properly only in Castilla-Leon and Castilla-La Mancha, Spain.
The rest of Spain speaks several dialects and official languages (catalan, vasco, gallego)
Therefore… you can imagine what could happen in Latin America.

>Hi Fabian,
>
>When in Latin America, I noticed that street signs, newspaper headlines, etc are always in the infinitive: tener, correr, instead of tengo, etc. Is that standard?
>