In addition to the signs, the control center staff will also advise motorists of traffic conditions and potential trouble spots, broadcasting over AM radio.

The Highways Agency has advised motorists to check conditions before venturing out.

Signs advised motorists to keep at least two chevrons apart, in essence warning them not to follow too closely.

Signs should also be posted on the street advising motorists to turn off their engines.

It came as police in parts of the country were advising motorists to stay at home amid the gusty conditions.

In Northern Ireland, police advised motorists to take extra care.

All the actions were taken after the automobile association's rare "travel alert" advising motorists against leaving Interstate 95.

AA Roadwatch advised motorists to use common sense when driving and to stay on the main roads.

The authority also advises motorists to buy round-trip tolls, to pay $5 one way, receiving a token for the return trip.

Police advised motorists in Northern Ireland to take extra care and slow down.