|Extensions to end of saturation, beyond if justified by balance of demand on all approaches.
||Extensions: For vehicles up to 45m extends green up to maximum phase.
|After end of saturation, considers all approaches.
||Considers only active phases.
|Link and stage maximums are available, but should be set sufficiently high not to be a constraint because 'end - sat' logic closes green only when appropriate.
Short cycling is available as a separate feature so do not need to set phase maximums low to make best use of flares.
|Maximums: Fixed by time of day and day of week: when busy tends to run to maximum (especially on multi-lane approaches).
|When junction is under saturated, queues should not form; when over saturated, queues can be 'balanced' by adjustable parameters.
||When busy, creates queues, often on a single approach, which do not clear until flow falls within capacity for the current preset maximum.
|Detectors: up to 75 - 150m+
||Detectors: up to 39m