Extra checks are to be carried out on London's "bendy-buses" after another vehicle caught fire at the weekend.
At least three "bendy buses" have caught fire in the last three months
The bus on route 436, operated by London Central Company, burst into flames on Park Lane on Saturday evening.
All the passengers and the driver managed to escape unharmed, but the vehicle was gutted.
Three of the double length buses have caught fire since coming into service in December.
Now special fire-suppression equipment is to be fitted to all "bendy-buses" by manufacturer Evo Bus, which is part of the Mercedes group.
And before they leave the depot all the vehicles have to be checked by staff.
Transport for London has also ruled that engineers must do an additional check.
There are about 130 "bendy buses" - officially known as Citaros - in service in London.
They were brought in to ease traffic flows before the congestion charge was introduced.