A third of crashes involves a vehicle being driven for work, a major study by the Royal Society for the Prevention of Accidents (RoSPA) has found.
At the same time, young motorists are more at risk of being killed or injured on the roads than more experienced drivers.
A project being run by RoSPA is asking employers to compare the driving styles of young and more experienced drivers, including how they assess risks and plan routes.
They are also being questioned about any policies they have in place, such as a minimum-age limit, and how well the present system of learner-driver training prepares people to drive for work.
The views of young drivers will be sought in focus groups taking place during the project, which is being funded by the Department for Transport.
RoSPA's road safety manager for England, Duncan Vernon, said: "A range of factors put young drivers at particular risk, including their lack of experience, their weakness in identifying potential hazards and some attitudes, such as over-confidence.
"Deadline pressures, unfamiliar routes and making frequent delivery stops can make driving for work very different to driving at other times, and issues such as these are not covered during learner training."
© The Press Association 2008