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TRL Software > Support & Training > Articles > How do I add bonus greens?

How do I add bonus greens?

TRANSYT 16.1.4 or later:

Bonus greens and other adjustments to effective green times that may be needed, can be modelled most easily by applying a traffic stream or link “green start adjustment” or “green end adjustment”.

N.B. The ability to apply phase-based “relative start displacement” or “relative end displacement” is retained. However, for some scenarios, such as bus setbacks, you will find the new “green start adjustment” or “green end adjustment” easier to use.

 

TRANSYT 15 and up to TRANSYT 16.1.3:

Bonus greens can be modelled by changing the phase-based “relative start displacement” or “relative end displacement” values in order to differentiate between ‘actual’ green time and ‘effective’ green time.  Within the TRANSYT model, these values ‘combine’ with the network wide start and end displacement values – which are often set to 2 seconds and 3 seconds respectively.   “Relative start displacement” and “relative end displacement” values can be either negative or positive, and are specified as part of the PHASE DATA.

Note: In situations where two traffic streams are controlled by the same phase, but require different displacement values, the phase should be copied, and set to control just the one traffic stream.  The displacement values can then be changed as required on just that particular phase, leaving the other phase (whose actual green times will be the same as the other phase) with the original start/end displacement.

(Updated – June 2023)

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