Skip to content
SWAT Alliance logo

Traffic data resource

What can a traffic count deliverable look like?

This original, web-native resource explains the possible structure of traffic data without presenting a client workbook, project record or fixed reporting template.

Synthetic intersection data

A movement matrix starts with a defined study structure.

A junction can have three, four, five or more arms. Approaches, lanes, movements, classes and intervals are included only where the project scope calls for them.

Illustrative intersection movement model
Synthetic four-arm intersection diagramA diagram of a fictional four-arm junction with North, South, East and West approaches and example left, through and right movement arrows.NORTHSOUTHWESTEAST

Approaches, arm count, lanes and movement rules are defined for the actual study; this diagram is a conceptual four-arm example only.

Synthetic turning-movement count example
ApproachMovementLightCommercialHeavyTotal
North approachLeft428454
North approachThrough6812686
East approachRight356344
Synthetic lane-by-lane example
ApproachLaneLightCommercialHeavy
North approachLane 13152
North approachLane 22974
East approachLane 12542

Lane configuration varies by project; three lanes are shown only to demonstrate a possible reporting dimension.

Illustrative traffic volume by interval

Text equivalent: the synthetic example totals are 71, 85, 78 and 62 across four consecutive 15-minute intervals. The values are illustrative and do not describe observed traffic.

Synthetic interval data example
TimeVehicle class AVehicle class BVehicle class CTotal
08:00–08:155213671
08:15–08:306116885
08:30–08:455714778
08:45–09:004611562
A clear QA/QC path
  1. 1Source video / data
  2. 2Counting / observation
  3. 3Structured interval data
  4. 4First review
  5. 5Structural validation
  6. 6Consistency / outlier review
  7. 7Correction where required
  8. 8Final QA/QC
  9. 9Deliverable

The agreed scope determines which completeness, reconciliation, consistency and manual-review checks are appropriate.