On Sat, 7 May 2011 12:46:17 +0100, Roland Perry
wrote:

...
Madrid metro has a premium fare to the airport (but not stations earlier
or later on the same line). I assume they enforce this with exit
barriers, I forget.

Madrid's T123 and T4 have a "suplemento" of ¤1 which you can add at
purchase or near the exit - stick the same ticket into a machine,
throw in a ¤1 coin, ticket is returned with the suplemento and you
exit ok at the gates. As you say, for fun the station between T123 and
T4 is Barajas which is w/o supplement. I wonder when MdM machines will
accept gringo CCs despite the labels showing no reason why.

I do remember having to go through barriers when
changing from one line to another near the city centre.
Curious which. Was it to/from the Cercanias or standard Renfe? MdM
lines connect without barriers but there can be very long walks:
Nuevos Ministeros 8 to 6 is loooong.
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