Ms Russell, who sits on the London Assembly's transport committee, joined local resident Barbara Hartnell, whose neighbour was killed at the junction, and members of the Safer A23 in Streatham campaign to see for herself where in just three years 31 people have been injured, seven of them seriously, and one person has lost their life.
"It was shocking to see this junction which is designed entirely for the benefit of motor vehicles while people have to take their chances looking for gaps in the traffic as there is no green man signal," said Ms Russell.
"I am tabling a question to the Mayor asking him to assess this junction using a healthy street check score and revisit the decision to avoid installing a crossing in the light of the assessment."
Local resident Jonathan Bartley, who was recently elected co-leader of the Green Party, invited Ms Russell to Streatham after news broke on Wednesday that TfL has rejected proposals for a new pedestrian crossing at or near the junction. Proposals for a new crossing were displayed in Streatham Library in November 2015.
The reason given by TfL team leader for traffic infrastructure Mark Griffiths in an email answering questions from the Safer A23 Campaign is that a new crossing would cause "increased congestion to traffic beyond an accetable level".
See also for the history at this junction: