Object Class: Traffic separation scheme roundabout

Acronym: TSSRON (A)

Code: 149

Set Attribute_A: CATTSS; DATEND; DATSTA; RESTRN; STATUS;

Set Attribute_B: INFORM; NINFOM; NTXTDS; SCAMAX; SCAMIN; TXTDSC;

Set Attribute_C: RECDAT; RECIND; SORDAT; SORIND;

Definition:

A traffic separation scheme is a scheme which aims to reduce the risk of collision in congested and/or converging areas by separating traffic moving in opposite, or nearly opposite, directions. (IHO Dictionary, S-32, 5th Edition, 5585)

A roundabout is a traffic separation scheme in which traffic moves in a counter-clockwise direction around a specified point or zone. (IHO Dictionary, S-32, 5th Edition, 4448)

References:

INT 1: IM 21;

S-4: 435.1;

Remarks:

Distinction: traffic separation line; traffic separation scheme boundary; traffic separation scheme crossing; traffic separation scheme lane part; traffic separation zone;