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Azerbaijan Pavilion at Expo 2015 in Milan

Expo 2015 – Azerbaijan Pavilion

Expo 2015 – Italian Pavilion

Scale 1:100 (meters)

Users approaching a roundabout must perceive vehicles with priority within the ring in time to change their speed to give way or possibly stop. In particular, to ensure adequate visibility, the following requirements must be adopted:

the observation point is placed at a distance of 15 m from the stop line coinciding with the edge of the external circumference;

the planimetric position is on the centre line of the roundabout entry lane (or entry lanes) and the observation height is 1 m above the road surface;

the area for which complete visibility is required corresponds to the quarter of the gyratory crown located to the left of the access channel being considered.

Construction of the visibility area to be guaranteed in roundabouts.

As regards the perception of the roundabout, it is advisable to create a central island of
rotation above or with clearly visible inclined edges: for this purpose, you can use
plantings or earth fillings as elements of arrangement and furnishing such as, however,
do not compromise correct visibility. It is however necessary to maintain a crown free from any type of visual obstacle (shrubs, etc.) of a width equal to 2 m measured from the internal edge of the surmountable crown or from the peripheral edge of the central island (in the case of roundabouts with an insurmountable central island).

The insertion of visual obstacles on directional islands must be absolutely avoided.

To increase the perception and "readability" of the roundabout, all the elements connected to it
(directional island and central island) should be visible at least 250 m away from it. Readability can also be achieved by excluding:

a curve and counter-curve approach configuration;

a central island of a non-circular shape;

an irregular width of the ring;

a transverse inclination of the gyratory platform oriented inwards;

a presence of planting on the arms near the junction with the roundabout, as it can give the illusion of continuity of the route.