Spanish public transport workers went on strike on Friday to voice their anger at plans to slash wages and reduce services.
They argue next year’s restructuring will eventually lead to job losses.
The walkout has hit commuters across Spain, including the capital Madrid.
A further strike is planned for Monday.
It will coincide with a protest by train drivers opposing the part-privatisation of Spain’s rail sector.
The Spanish government wants to reduce what it spends on public transport as it aims to rein in its budget deficit.
Madrid wants to avoid seeking aid from the eurozone’s rescue fund.
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