Drivers who are found to be travelling 50km/h or more above the speed limit are still liable to have their vehicle seized.
It is understood French officials are trying to negotiate a new agreement to enable drivers to be fined retrospectively.
The EU directive was first launched in 2015 but France and the UK only began sharing information last year.
The UK were initially against joining the scheme as they were worried the cost of setting up the programme would be more than any fines generated.
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However, French officials are concerned the UK could bumble over the negotiations which would allow drivers to break the rule without heavy punishment.