The Royal Society for the Prevention of Accidents, with support from the Department for Transport, has launched the 'Journey Planner' for fleets, designed to help fleets plan journeys more thoroughly.
Latest accident figures show 1,000 people every year are killed in work-related road accidents.
Kevin Clinton, head of road safety at RoSPA, said: 'Employers have a clear legal duty to manage the safety of their employees on the road. They should ensure that their organisation's road journeys are properly planned and safely completed.
'Managers need to ensure that they prepare schedules which allow sufficient time for drivers to take account of reasonably foreseeable weather and traffic conditions and to comply with speed limits.'
The planner covers issues such as driver fatigue, reducing distances travelled, controlling hours and reviewing shift arrangements.