Traffic Network and Isolated Intersection Study Tool
TRL Software’s next generation of signalised modelling software

Software untuk simulasi koordinasi lampu lalulintas di beberapa model simpang (junction).

TRANSYT is used around the world for designing, modelling and optimising everything from individual isolated junctions to large and complex networks.

Now TRANSYT 15 offers its worldwide users new levels of modelling tools. This next generation release has had many elements rewritten to make it easier to use and faster to run. It also supports the latest operating systems and has additional tools that users require.

Main Features
Individual signalised or unsignalled junctions (with and without internal stop lines) can be easily modelled in TRANSYT.

The model can be constructed either using traditional link structure or using TRANSYT 15’s lane and traffic stream structure that allows a direct ‘one real lane’ to ‘one model lane’ representation.

The model also provides for give-way priority control, including the modelling of opposed right-turn traffic within signal controlled junctions. Standard ARCADY and/or PICADY geometric data can be specified in order to calculate and assign the required give-way coefficients to the network* – all within the one data file. TRANSYT provides a fast and efficient way of comparing alternative signalled, unsignalled, and partially signalled solutions within the one product

Fully-signalised and partially-signalised roundabouts can be modelled and their delay minimised by calculating timings which reduce blocking-back by keeping the circulating carriageway free flowing. Where blocking cannot be prevented TRANSYT’s cell-transmission model can be used to model its effects. Totally unsignalled roundabouts can also be modelled, and when included in a network, the effects of such roundabouts on the network are accurately represented, and the co-ordination can be optimised.

Weighting factors, queue-length penalties, and degree-of-saturation penalties can be applied to individual links or lanes in order to encourage the optimiser to produce timings that avoid queues beyond a certain length or to reduce delays on specific links.

The program can be used to produce timings which give priority to buses or trams without the need to detect individual special vehicles within mixed traffic streams.

TRANSYT includes the accurate modelling of flared (short lane) approaches. This is particularly important in modelling signalised roundabout approaches where flares are common.

Both isolated and ‘within junction’ signalled pedestrian crossings can be represented within the TRANSYT network model and the provision of green times for pedestrians reported.

TRANSYT can also model time-varying traffic conditions by splitting the modelled period into time slices. Queue and delay results are generated for each time slice as well as for the overall situation. Signal timings are optimised for the complete time period.

TRANSYT 15 is naturally suitable for both drive-on-the-left and drive-on-the-right operation.