How to design a roundabout?
- Ensure smooth traffic flow and turns.
- Make turning safe day and night.
- Install signs before and at the roundabout.
- Integrate the roundabout into the urban landscape.
Designing a roundabout
It must be impossible to drive straight through and visible day and night.
Position and advance warning mandatory directional signs to indicate the presence of a roundabout.
Advance warning directional sign with breakable mast
Directional sign with breakable mast
AB3 yield sign
Traffic control sign (Solflex self-righting sign)
Mandatory traffic direction
For more information on French regulations on directional signs, and especially on the colour, level of retro-reflection, character height and sign dimensions, click on standards and regulations.
Set up floral installations
On the central island of the roundabout, flower installations make the traffic area more pleasant.