What does "colectora external" mean?

Question

Hi, I'm currently trying to translate the Buenos Aires wikipedia article and I came across this phrase: "colectora externa." Literally, it seems to be external collector but that does not seem to make sense within the context of the passage. Is there some more idiomatic meaning? I also already checked the phrasebook. Thanks for everybody's help!

Here is the passage to give context with the phrase bolded.

"El resto del perímetro está rodeado por la colectora externa de la Avenida General Paz, autopista de km de extensión que circunvala la ciudad de norte a oeste; existe un pequeño tramo de no más de 2 km comprendido entre la Avenida Intendente Cantilo y el Río de la Plata donde el límite con la provincia de Buenos Aires en parte es la línea imaginaria de la prolongación de la Av. General Paz y otro tramo el arroyo Raggio, este sector corresponde al límite entre el Parque de los Niños y el Paseo de la Costa."

http://es.wikipedia.org/wiki/Buenos_Aires

Bienvenido al foro. - annierats, Mar 21, 2012

!gracias! - Joel-Pridgen, Mar 21, 2012

Answer 1

I have never been to South Americda but I think it means;

The Outer Ringroad, or equvivalent.

Thanks! I think it is something like that. Do you have any idea how I can link the idea of "external collector" and "outer ringroad"? So, that I can understand it better. - Joel-Pridgen, Mar 21, 2012

If you think in the function of the outer ringroad, it is a street outside of the town (external), and it's made to gather (collect) traffic, cars, etc. - comunacho, Mar 21, 2012

Thanks comunacho, I'm very busy at work just now.. - annierats, Mar 22, 2012