The total value of fines issued to UK fleet drivers increased by just 3% in 2019 - a gentler rise than in previous years before, according to Lex Autolease.
In the three years prior to 2019, the total value of fines issued to the drivers of the leasing firm's 361,000 company cars and vans increased by 60%, from £10.7m in 2016 to £17.1m.
The leasing company has seen a 17% decrease in the number of bus lane camera penalties, while the number of congestion charge fines and council parking fines fell by 6% and 4% respectively.
The combined number of fines issued for not paying the Merseyflow and Dartford Crossing charges fell by 44%, from 54,618 in 2018 to 30,391 in 2019.
On the other hand, box junction stops and offences against red route rules increased by 19%, to a total fine value of £6.3m.
Kim Morris, motor operations director at Lex Autolease, said working drivers could be more susceptible than other motorists to incurring fines and penalties on the roads due to the pressure to hit deadlines, which could sometimes lead to poor driver behaviour.
But Morris added: "Fleet managers have placed a great emphasis upon driver health and safety in recent years and it's encouraging to see evidence that this is starting to pay off, with a considerable slowing in the rise of the number of fines incurred and a decrease in the number of fines for commonplace offences, including bus lane driving and congestion charges.
"However, our analysis shows that there's still more businesses can do to educate their employees to bring these numbers down further. Continuing to invest further in driver education can help to modify employees' driving habits and in turn save businesses unnecessary outgoings each month."