HIGHWAY LINK & JUNCTION MODELLING

WELL RECEIVED OPTION TESTING OF DESIGN CONCEPTS AT A HIGH LEVEL

FOR ADVICE OR HELP WITH YOUR PROJECT PLEASE CALL 01206 751 101 or 07960 221 333

  1. At the early stages of a project, understanding how different types of potential treatments can affect a highway link or junction is useful.  Using technical or rudimentary techniques, we can provide high-level outputs, for example, travel times, delay times, queue lengths etc for scenarios such as before (do-nothing) and after (do-something) highway improvements.

    Our reporting will compare different improvement schemes and can also highlight short-term to long-term options.  Improvement schemes can include bus priority benefits along with a highway link or junction, or proposed diversion routes due to a proposed road closure.

    In addition to assessing our client’s initiatives, based on our international expertise, we can provide designs to assist with our client's objectives.

    If you require assistance with highway and traffic engineering design or junction modelling, please feel free to contact us on 01206 751 101 

CONTACT US FOR A QUOTE OR MORE INFORMATION

EXAMPLES

A12/A112 WHALEBONE LANE NORTH, LONDON

  1. Ayen Consulting was engaged by Transport for London and local authority London Borough of Barking and Dagenham Council (LBBD) to assess peak period congestion concerns along Whalebone Lane North approaches to the signalised junction with the A12 during peak periods.  

    Using LinSig software designed to model traffic signalised junctions, we calibrated a model to replicate the existing intersection using topographical and traffic survey data sourced from TfL. The model was validated against current queues lengths and a less orthodox approach using the degree of saturation for each lane on the A12, as queue lengths were noticeably non-uniform.  

    Ayen Consulting found excessing delays were developing due to excessing queues in flared lanes blocking through traffic. Our well-received report and modelling provided an incremental snapshot of the junction’s underperformance and a do-minimum upgrade design to improve traffic capacity.  Our design was approved by the TfL & LBBD and an extension of the existing northbound right-turn lane was constructed resulting in a significant reduction in delays and Practical Reserve Capacity (PRC). Following a further request, our junction design also included controlled pedestrian facilities linking the existing southern footway.

    You can see the extended right-turn lane on Whalebone Lane North northbound approach to the A1 on Google. 

BUS PRIORITY INITIATIVES –LONDON

  1. Ayen Consulting was engaged by Transport for London to assist with reducing bus delays at junctions during daily peak periods.  Using Oyster patronage and onboard bus data, the bus travel, queuing, and dwell times were used to understand areas of concern.  

    Using TRANSYT software designed to model a network of junctions, we calibrated a model to replicate the average travel time along bus routes and re-designed traffic signal timings and junction geometry to reduce delay for approaching buses.  Bus priority initiatives included bus gates, peak-time bus lanes, prohibited turning movements etc.

    The delay and link travel time output data and short/long-term design concepts were used in the benefit-cost analysis process with initiatives that scored a high benefit-cost ratio progressed to further traffic modelling and detailed design.

    We used the macroscopic-modelling approach to provide high-level results for many initiatives within a short timeframe followed by a detailed assessment for initiatives taken forward.  Ayen Consulting received praise for providing quick-thinking.

'Excellent and very professional service provided by Ayen Consulting to support our Local Plan objection. Efficient data collection with robust analysis and clear presentation in a comprehensive technical report; all completed within a very tight timescale.'

ANDREW GUTTRIDGE

Bildeston Parish Council, Suffolk, UK

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Ayen Consulting, Suite A, 31 Gilderdale Close, Colchester, Essex, CO4 0NL

07960 221 333

01206 751 101

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