11.3.5 Data Input and Parameters

The general inputs needed to perform traffic operational and safety analysis for interchanges are below.
  • Peak hour TMC for all the approaches;
  • Distance between intersections of an interchange;
  • Number of lanes and lane assignment;
  • Heavy vehicle percentages;
  • Turning movement speeds and speed limits;
  • Pedestrian/bicyclist volumes;
  • Number of lanes crossed by a pedestrian/bicyclist;
  • Crash records for the preceding three to five years; and
  • OD information to discount U-turn movements or properly account for the depending on configuration