Fine Gael has proposed an emergency plan to tackle traffic congestion in Dublin, ahead of a ban on Heavy Goods Vehicles in the city centre.
There are fears that the ban - which comes into effect tomorrow - could lead to chaos for commuters on the M50.
From tomorrow, all trucks over a certain size will be banned from Dublin city centre between 7am to 7pm, seven days a week.
Trucks will be forced to use the Port Tunnel and drive onto the M50 to access routes to other parts of the country.
Fine Gael said this will only add to the gridlock on the M50 and they want a Dublin Transport Authority to be established immediately to oversee the problem.
They also want a cap on the number of buses to be lifted to ease congestion - and are calling on the gardai to run operation free-flow all year around.