COMHAIRLE CONTAE ÁTHA CLIATH THEAS
SOUTH DUBLIN COUNTY COUNCIL

MEETING OF SOUTH DUBLIN COUNTY COUNCIL

Monday, April 08, 2024

QUESTION NO.2

QUESTION: Councillor Y. Collins

Has the Council considered using optical illusion speed bumps as part of a strategy to reduce speeding on our roads and to assist in traffic calming?

REPLY:

The Council have seen that pilot studies are being carried out in London on the effectiveness of 3-D optical illusion speed bumps. These painted on effects are in fact flat with the road surface but appear to have vertical depth to the oncoming driver.

The Council will continue to follow and implement the Irish Guidance documents in relation to traffic calming.  These recognised documents and guidance comes from the Design Manual for Urban Roads and Streets, the NTA, TII design specifications and the Department of Transport circulars.  These publications contain the tested and adopted guidance for traffic calming on public roads.

Our Senior Transport Stakeholders responsible for the development of Irish National Road Safety Policy constantly monitor the market for any new forms of traffic calming methods and will test and recommend any methods that have measurable improving effects on reducing driver speed. 

The Council will be waiting for formal advice from our National Road Safety Policy makers such as the (DOT, NTA, TII or RSA) on the use of 3-D optical illusion speed bumps before we would install them in our County.