Figures show drivers are seven-and-a-half times more likely to have an injury related accident since the clocks went back than at any other time.
In 2009-2011 figures, 14 injury related collisions occurred between 4.30pm and 6.30pm during the week and 10 of those 14 were between October and December.
Highways Agency Asset Development Manager, Brian Pitkin said:
The number of accidents during peak hours on the Orwell Bridge increases once the clocks change in the autumn.
As part of our work to try to reduce the number of accidents, working with Suffolk Police, we will be displaying ‘Keep your distance’ messages on the electronic signs as drivers approach the bridge.
We will display the messages for one week so they don’t lose their impact with drivers.
The messages will be displayed from today Monday 10 November, until November 14 from 6am until 10am and again from 3pm until 7pm on the eastbound and westbound approach to the bridge.
Members of the public should contact the Highways Agency Information Line on 0300 123 5000.
Journalists should contact the Highways Agency press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.