Service summary
Roundabout studies record entry, exit and circulating movement paths across named arms.
When it is used
Use it for roundabout access, design, operation and network studies.
Methodology
Agree an entry-to-exit matrix and arm labels before observation.
Inputs and source requirements
Provide the roundabout layout, arm labels, observation windows, class scope and delivery structure.
Movements and classifications
Each movement is recorded from its entry arm to the agreed exit arm, with active travel treated separately if requested.
Time intervals
Use one interval structure across all included arms.
Typical deliverables
Entry-exit movement tables, classified or active-travel data where scoped, and site notes.
Quality control
Reconcile included entries with exit-path totals and flag hidden or unavailable movements.
Limitations
It is an observed record and not a simulation of future roundabout performance.
Privacy and security
Source footage is transferred through approved project channels.
Frequently asked questions
Can multi-lane roundabouts be counted?
Yes when the views support the requested paths; multiple cameras or a narrower class scheme may be needed.
Do entries and exits need separate totals?
Yes. They are distinct dimensions in a roundabout movement matrix.
Can a roundabout be counted with one camera?
Sometimes, if every required entry and exit path is visible; multi-camera coverage may be needed for central-island occlusion.
Can lane-by-lane output be requested?
Yes, when lane boundaries and movement paths remain distinguishable in the source.