Civil engineering firm Lowery is the 150th company to achieve Fors gold accreditation.
The Reigate, Surrey-based Lowery runs three HGVs and vans in and around London working on projects supporting the rail industry.
It has been a member of Fors since 2012.
Kevin Griffiths, compliance and SHEQ manager at Lowery, said: “Our new Fors gold accreditation is the result of a sustained effort in improving our fleet operations.
“Significant benefits have been achieved with regard to both fuel efficiency and a reduction in vehicle accidents (put at a 25% reduction). We have also noted a reduction in our fleet insurance premiums as a result of these improvements,” he added.
Lowery, which has added cameras, nearside proximity sensors and audible alarms to all of its vehicles, said it had also seen a 93% reduction in parking fines thanks to the training and toolkits available via Fors membership.