Strike action will hit the cross-border buses running from Gex to Geneva, through Ferney Voltaire from today.
The bus lines 60 and 61 will suffer delays and cancellations from today - and then for an indefinite period.
The service is run by a subcontractor for the TPG.
The TPG says early and late services are likely to be the worst hit.
Heat to stay for now
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Fire damages trees in the Jardin Anglais
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Cows sweltering in the heat
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