Tougher penalties for speeding and other "excessive behaviour" by motorists are to be proposed by ministers as part of a bid to cut road deaths.

Drivers who break the speed limit by a large margin could be given six penalty points, a consultation is expected to suggest, meaning they would be banned after two offences.

Other measures will target drink drivers and those who put lives at risk by taking to the wheel under the influence of other drugs.

Provisional Government figures showed this month that the number of people killed on the roads in spring this year fell by 20% compared with the same period in 2007.

There were 580 fatalities in April-June 2008 compared with 721 in the same three months last year, the statistics showed.

But Road Safety Minister Jim Fitzpatrick believes more can be done to cut the numbers further and will outline the proposals in a written statement to the Commons.

They will be the subject of a three-month consultation.