Analysis of simple to complex Intersections and Networks

Aerial photograph of road

What kind of road traffic facilities can SIDRA INTERSECTION model?

Any Network with up to 50 Sites to model mixed types of intersections, crossings and interchanges listed below.

Signalised intersections and networks

  • signalised intersections (fixed-time / pretimed and actuated)
  • large signalised and unsignalised intersections with wide median storage areas
  • paired (compound) intersections and interchanges operating under a single controller (Common Control Group)
  • Network timing for signal coordination
  • (Network Cycle Time, Green Splits, Offsets)
  • coordinated signalised intersections with sign-controlled intersections between them


  • unsignalised roundabouts
  • roundabouts with metering signals
  • paired (compound) roundabouts
  • roundabout corridors
  • fully-signalised roundabouts (including signalised circulating roads)

Sign control

  • two-way stop sign control
  • two-way give-way / yield sign control
  • staged crossings at sign-controlled intersections
  • (including "seagull" T intersections)
  • all-way stop sign control

Pedestrian crossings

  • signalised crossings at intersections (full crossings and staged crossings)
  • unsignalised (zebra) crossings on slip / bypass lanes
  • midblock signalised crossings
  • midblock unsignalised (zebra) crossings

Public transport and bicycle facilities

  • Bus lanes
  • light-rail / tram lanes
  • bicycle lanes and
  • bus, light-rail / tram and bicycle signals

Staggered T intersections

  • signalised
  • roundabout
  • sign control


  • single point interchanges (signalised)
  • signalised diamond interchanges
  • double roundabout interchanges

Alternative intersections and interchanges

  • diverging diamond interchanges
  • divergabout interchange
  • continuous flow intersections
  • restricted crossing U turns
  • numerous variations and other types
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