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EA:  ROAD_INTERCHANGE_TYPE

Status: STD 2005/06/07
Code: 1117
Concept definition: The physical arrangement of a <ROAD_INTERCHANGE>; road interchange type.
 
Attribute value type: ENUMERATION
Reference type: IR
Reference: [FACC, Annex B: RIT]
Supplemental references:  
Enumerants (presented in a natural order)
Status Attribute label Enumerant label ▾ Concept definition Code Ref type Reference Supplemental references
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE CLOVERLEAF Consists of two <ROAD>s crossing at separate vertical levels and a <SET> of eight radially symmetric <RAMP>s for traffic to flow without stopping from either <DIRECTION> on either <ROAD> to either <DIRECTION> on the other <ROAD>, with the four inner <RAMP>s arranged in the shape of a cloverleaf. 1 IR [FACC, Annex B, RIT:1] [DFAD, FID: 231]
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE DIAMOND Consists of two <ROAD>s crossing at separate vertical levels and a <SET> of four radially symmetric <RAMP>s for traffic to flow from either <DIRECTION> on one <ROAD> to a stopping <LOCATION> from which a turn in either <DIRECTION> on the other <ROAD> may be made, with the four <RAMP>s arranged in the shape of a diamond. 2 IR [FACC, Annex B, RIT:2] [DFAD, FID: 232]
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE FORK Consists of a <ROAD> where a second <ROAD> originates and diverges and an <OVERPASS> and <RAMP>s allow traffic to flow without stopping between the originating <ROAD> and the diverging <ROAD>, with traffic flow not allowed between the diverging <ROAD>s; fork. 3 IR [FACC, Annex B, RIT:3] [DFAD, FID: 235]
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE ROUNDABOUT Consists of two <ROAD>s crossing at separate vertical levels and a <SET> of four radially symmetric <RAMP>s joined to a circular <RAMP> at a lower vertical level for traffic to flow without stopping from either <DIRECTION> on either <ROAD> to either <DIRECTION> on the other <ROAD>; roundabout. A roundabout is also known as a rotary. 4 IR [FACC, Annex B, RIT:4] [DFAD, FID: 233]
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE STAGGERED_RAMPS Consists of two <ROAD>s crossing at separate vertical levels and a <SET> of four radially symmetric paired <RAMP>s for traffic to flow in either <DIRECTION> on one <ROAD> to stopping <LOCATION>s from which a turn in either <DIRECTION> on the other <ROAD> may be made; staggered ramps. 5 IR [FACC, Annex B, RIT:5] [DFAD, FID: 239]
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE STANDARD_RAMPS Consists of a set of <RAMP>s, and possibly <OVERPASS>s, allowing traffic to flow with limited or no restrictions between two crossing or meeting <ROAD>s; standard ramps. 6 IR [FACC, Annex B, RIT:6] [DFAD, FID: 230]
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE SYMMETRICAL_RAMPS Consists of two <ROAD>s crossing at separate vertical levels and a <SET> of four paired <RAMP>s for traffic to flow from either <DIRECTION> on one <ROAD> to stopping <LOCATION>s from which a turn in either <DIRECTION> on the other <ROAD> may be made; symmetrical ramps. 7 IR [FACC, Annex B, RIT:7] [DFAD, FID: 238]
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE TRUMPET Consists of a <ROAD> where a second <ROAD> originates and four <RAMP>s and an <OVERPASS> allow traffic to flow without stopping from either <DIRECTION> on either <ROAD> to either <DIRECTION> on the other <ROAD>; trumpet. 8 IR [FACC, Annex B, RIT:8] [DFAD, FID: 237]
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE TURBAN Consists of two <ROAD>s crossing at an angle at separate vertical levels and a <SET> of four radially symmetric <RAMP>s and two <OVERPASS>s for traffic to flow without stopping from either <DIRECTION> on the upper <ROAD> to either <DIRECTION> on the lower <ROAD> and with <RAMP>s from the lower <ROAD> only provided for traffic to flow from either <DIRECTION> to only two of the four directions on the upper <ROAD>; turban. 9 IR [FACC, Annex B, RIT:9] [DFAD, FID: 234]
STD
2005/06/07		 ROAD_INTERCHANGE_TYPE WYE Consists of three <ROAD>s meeting at the same vertical level and a <SET> of six <RAMP>s and associated (typically three) <OVERPASS>s for traffic to flow without stopping from either <DIRECTION> on either <ROAD> to either <DIRECTION> on another <ROAD>; wye. 10 IR [FACC, Annex B, RIT:10] [DFAD, FID: 236]
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