It comes after some concerns were raised about the amount of passengers on Stagecoach buses departing from Barnsley bus station over the weekend.
A spokesperson for Stagecoach said: “For many weeks, the government and public health authorities have stressed that people should only travel if necessary and that they should observe social distancing, including on public transport.
“We have also reinforced this message clearly and extensively for our customers.
“To help key workers and those who have essential travel, we have made some changes where trends have been identified, such as extra trips, duplicates and bigger buses.
“The bus industry is continuing to work with government and local authorities on plans to ensure that buses continue to play a vital role in keeping people moving safely.”