Tool for Evaluating Strategies for Traffic - TEST
TEST – Tool to Evaluate Strategies for Traffic has been developed for operators of Traffic Control Centres to predict the consequences of actions they undertake on their network, whether it is in response to an incident or simply in considering the impact of implementing a new junction onto traffic control systems such as SCOOT (Split Cycle and Offset Optimisation Technique) or MOVA (Microprocessor Optimised Vehicle Actuation). |
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Incidents, events and roadworks all have the potential to impact traffic patterns and flows and can often cause significant congestion and delay to the travelling public. Under the Traffic Management Act (TMA) 2004, Part 2, Local Highway Authorities (LHAs) are required to expand their existing planning beyond managing traffic on their own road network, to assessing the potential impact of any traffic management plans on neighbouring LHAs' networks as well.
TEST uses traffic PTV's VISSIM micro-simulation package integrated with real time signal control mechanisms such as SCOOT and MOVA to evaluate signal strategies, the only tool of its type to do so. This enables operators to plan for events by asking "What if?" questions of the software ie. "What if next time a vehicle breaks down in this stretch of one-way road, I change the signals to allow more green time?" The software allows different signal settings to be trialled and comparison of the results of different strategies to be viewed. In this way, operators can decide upon an effective strategy for an event and export this onto the street the next time such an event occurs.
TEST delivers improved operational efficiencies through streamlining the planning process around events and incidents. For instance, multiple options for routes, lane closures and traffic signal plans for a large concert can be tested offline. Operational efficiencies can also be realised through testing new signalised junctions prior to their installation to ensure the optimal, right first time operation of the junction from implementation, thus reducing bedding in times and allowing road users to realise benefits from the outset.
Integrating TEST into the operator environment can also bring significant improvements to road user perception and satisfaction. TEST can help operators provide a smoother and more consistent experience to drivers through helping to apply the most appropriate traffic signals and plans for a given scenario.
TEST also allows LHAs to deliver economic benefits in the form of reduced congestion and delay, maximising the capacity of the existing road space while maintaining shorter and more reliable journey times.
The design of TEST has been based on open architecture standards is user friendly, with users needing no previous micro-simulation experience to work with the tool.
For further information, please contact Kate Fuller:
Tel: +44 (0)1344 770830
Email: kfuller@trl.co.uk
