ARCADY
| Developer(s) | Transport Research Laboratory |
|---|---|
| Stable release | 8.0.4
/ March 2014 |
| Operating system | Windows (XP / Vista / 7 / 8) |
| Type | Traffic Software |
| License | Software license agreement |
| Website | http://www.trlsoftware.co.uk/ARCADY |
ARCADY is the acronym for (Assessment of Roundabout Capacity And DelaY). This software, produced by the Transport Research Laboratory (UK), models traffic capacity, queues and delays at roundabouts. The software is largely based on empirical relationships which were the result of extensive research carried out on existing roundabouts on the UK road network, as well as controlled test track facilities over a period of over a decade. [1]
The program is used by traffic engineers when assessing existing layouts or when analysing the impacts of proposed design changes. Estimates of annual accident frequencies can also be obtained.
ARCADY is listed in the UK's design manual for roads and bridges.[2]
RODEL is similar to ARCADY and utilises TRL equations under licence from TRL.
Papers on ARCADY:
- Kimber, R.M., The Traffic Capacity of Roundabouts, TRL Laboratory Report LR942, 1980.
- Maycock, G. and R.D. Hall, Accidents at 4-Arm Roundabouts, TRL Laboratory Report LR1120, 1984.
- TD 16/93, Geometric Design of Roundabouts, U.K. Department for Transport, 1993.
Recent developments
From ARCADY 7 onwards, the software has included Arcady autotrack link, which is capable of communicating with CAD software AutoTrack. This aids real-time design analysis.
ARCADY 7 also introduced the ability to model simple networks of linked roundabouts.
In ARCADY 8, the related PICADY model (Priority Intersection Capacity and DelaY) for 3 and 4-arm priority intersections was incorporated into the ARCADY user interface. The HCM 2010 methodology for roundabout analysis was also made available.
ARCADY 8 introduced a simulation technique to deal with the modelling of certain configurations such as lane usage at roundabouts.
'ARCADY Lite' is a simplified version of ARCADY 8 that provides basic analysis of roundabouts.
External links
- ARCADY Product Page
- Transport Research Laboratory
- UK Design Manual For Roads ARCADY Page
- BIM Roundabout Modelling Website
References
- ^ Roundabout Design for Capacity and Safety: the Empirical Methodology
- ^ Highways Agency TA44/92 UK Design Manual For Roads
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