6,166 average speed camera fines were handed out to drivers breaking the limit in just one 800-metre stretch of road into Birmingham city centre in the year to September.
It comes after initial findings after 12 months of a 21 month trial in Birmingham and Solihull show an average 14% speed reduction across the nine sites they were re-introduced at.
One site registered an average 20% speed reduction.
The hotspot on Bristol Road, where there is a 30mph limit, is among several sites across the West Midlands where the new number plate-reading speed cameras have been trialled.
A formal review of the scheme will happen in 2018, although the trial is due to last up to five years.
Stewart Stacey, from Birmingham City Council, has insisted the installation of the new cameras is not about making money: