Foreword* 

1 - General Design 

• Traffic considerations 
• Motorway forks or nodes 
• Grade-separated interchanges between a motorway and an ordinary road 

2 - Visibility* 

• Principal sight distances 
• General provisions 
• Visibility on approaches to access points 
  Visibility at an exit 
  Visibility at an entrance
• Visibility along slip roads and branches 
• Visibility under structures

3 - Geometric Characteristics of Branches and Slip Roads 

• General provisions 
  Minimum and maximum radius values 
  Sequencing of horizontal alignment elements 
  Transition curves 
  Transverse deflection length 
  Deceleration and acceleration zones* 
• Vertical alignment
• Cross-section
  Nodes
  Interchanges between a motorway and an ordinary road 
  Auxiliary lanes 
• Crossfall 

4 - Exit Systems

• 4.1 - Exit from the mainstream lane
  Choice of exit system*
  Layout of direction signs and markings*
  Single-lane exits 
  Two-lane exits
  Left-hand exits (on nodes only)* 
• Lane reduction after an exit
• Exit from a slip road or branch
• Exit system geometry*

5 - Entrance Systems

• Entrance onto the mainstream lane
  Choice of entrance system
  Single-lane entrances
  Two-lane entrances
  Left-hand entrance
• Lane reduction after an entrance
• Entrance on a slip road or branch 
  Merging entrance to a lane (Eb 11) 
  Entrance adding two single-lane slip roads (Eb 11) 
• Entrance system geometry

6 - Geometry of Diverge and Merge Segments 

• Definitions*
• Construction of the diverge segment
  Nodes
  Grade-separated interchange between a motorway and an ordinary road*
  Exit to a collector lane
  Loop exit
• Merge segments
  Nodes
  Grade-separated interchange between a motorway and an ordinary road*
  Merge from a collector lane
• Crossfall of diverge/merge segments*
• Markings for diverge/merge segments
  Exits
  Entrance handled by merging or adding one or two lanes

7 - Closely-Spaced Access Points 

• 7.1 - Consecutive exits 
  Siting conditions 
  Two exit tapers
  Exit taper followed by a lane assignment exit 
  Lane assignment exit followed by an exit taper 
• Consecutive entrances* 
• Entrance followed by an exit
  Direct sequence
  Sequence with a weaving lane
  Sequence with a weaving system on a collector lane* 
• Connections to the Ordinary Road Network 
• Developments involving Existing Infrastructure 
  General provisions
  Branch geometry* 
• Bibliography*
• Glossary* 

Appendix

*: updated in 2021