Jaywalker, Southwark did commission a survey which found the 15%tile above the speed limit on Lordship Lane were travelling a lot faSter than the traffic on Melbourne grove. http://www.southwark.gov.uk/download/downloads/id/13539/melbourne_grove_south_safety_review_and_feasibility_study_report It's on page 8. The average speed on Melbourne grove is below the speed limit, the average on Lordship Lane is above the limit. There's no logic to spending ?35k on a road that does not have a speeding issue.