Currently there are 400,000 commercial vehicles in the Irish fleet.
As the impact of the recession takes its toll, companies are struggling to refresh fleets and instead are leaving older vehicles on the road.
This has an obvious road-safety element.
Cartell says it is delighted that the Government, recognising the issues in the commercial sector, has designated the Road Safety Authority to oversee commercial vehicle testing on a day-to-day basis and has also released Commercial Vehicle Roadworthiness Certificate (CVR) information to the public for the first time.
This will allow people to check official roadworthiness of these vehicles before they buy.
Cartell also says there has been a dramatic fall-off in the numbers of vehicles registered to the commercial fleet since the recession took hold.
Cartell Director Jeff Aherne said: "Clearly companies are finding the going tough.
"As the fleet ages it is now more important that commercial vehicle buyers check the history before they buy.
"From April 2013 Cartell.ie can check if a vehicle has a current CVR Cert and we would discourage anyone from buying a vehicle without one."