Families travelling to France for the half-term break have been warned to expect long delays and disruptions, as protests over the French Government's pension reform continues.
With oil refineries and fuel depots being targeted by demonstrators, the RAC has urged UK motorists to ensure they take enough fuel to complete their journeys.
The Foreign Office confirmed that the protests were affecting road, rail and air travel in France, causing "substantial and unpredictable disruption across the country".
The RAC said: "We are advising motorists travelling to France to be aware of the current industrial action that is causing disruption across the country.
"Ongoing industrial action at oil refineries and fuel depots across France is creating a shortage of fuel with one in three petrol stations experiencing little or no fuel. News reports also suggest there is panic buying of fuel and 'go slow' protests are also affecting some motorways."
RAC motoring strategist Adrian Tink said: "Motorists should ensure they have sufficient fuel to complete their journey and to top up their tank as and when they can rather than allowing fuel to get to a critically low level."
French president Nicolas Sarkozy is hoping to force through a parliamentary vote on the pension and retirement-age changes, but it is not known if this will have any effect on the continuing protests.
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