A Waddon road junction that is blighted by congestion is to receive "significant investment" to alleviate jams.
Fiveways junction, also one of Croydon's worst accident blackspots, is in line for a share of a £3.8 billion investment pot earmarked by TfL for redevelopment some of London's most troublesome roads.
The Mayor's Roads Task Force will not announce specific plans until May, but the borough's London Assembly member predicted the work would result in more trade for Croydon businesses.
Councillor Steve O'Connell said: "We don't yet know exactly what the improvements will be, but it is going to take significant investment to get the traffic flowing.
"Fiveways is currently a big problem - there are five arterial roads flowing into one junction.
"It is vital that that we get the traffic flowing. We need to get people to Croydon, get them shopping and get them spending money."
TfL would not confirm plans to redevelop Fiveways, but Cllr O'Connell said TfL commissioner Peter Hendy had "given his word".
Cllr O'Connell added he would also be pressing the Roads Task Force to designate funds for the redevelopment of Purley Cross junction, another area troubled by congestion.