Mexicaltzingo Station on the Guadalajara metro line. As the Metro tunnel was being built, trolleybuses were used in it until rail service could be established. When the first phase of tunnel work was done trolleybuses ran as far as they could and then were turned in the tunnel for the return trip. Trolleybus turntables are quite rare; and, this one in a tunnel (though temporary) must be the rarest of them all. Photo 1: Somex TB 1120 has been turned and is ready for the return journey out of the tunnel. In the background sister unit 1113 has just driven up on the turntable.
Foster Palmer photo courtesy Harry Porter
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