Arcady
Encyclopedia
ARCADY is the acronym for (Assessment of Roundabout
Capacity And DelaY). This software, produced by the Transport Research Laboratory
(UK), provides information on traffic flow
including modelling 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 roundabout
s on the UK road network, as well as controlled test track and on street trials over a period of over a decade.
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 contains a link within to communicate automatically with CAD software to enable the traffic analysis of a proposed CAD design to be viewed in real time as changes are made.
ARCADY is listed in the UK's design manual for roads and bridges
.
RODEL is similar to ARCADY and utilises TRL equations under licence.
Papers on ARCADY:
Features
Also a poet.
1590 T. WATSON Melib. 363 Diana matchlesse Queene of Arcadie. 1850 TENNYSON In Mem. xxiii. 24 To many a flute of Arcady.
Roundabout
A roundabout is the name for a road junction in which traffic moves in one direction around a central island. The word dates from the early 20th century. Roundabouts are common in many countries around the world...
Capacity And DelaY). This software, produced by the Transport Research Laboratory
Transport Research Laboratory
TRL is a British transport consultancy and research organisation based at Wokingham Berkshire with approximately 500 staff. TRL is owned by the Transport Research Foundation , which is overseen by 80 sector members from the transport industry. TRL also own small UK regional offices situated in...
(UK), provides information on traffic flow
Traffic flow
Traffic flow, in mathematics and civil engineering, is the study of interactions between vehicles, drivers, and infrastructure , with the aim of understanding and developing an optimal road network with efficient movement of traffic and minimal traffic congestion problems.-History:Attempts to...
including modelling capacity queues
Queueing theory
Queueing theory is the mathematical study of waiting lines, or queues. The theory enables mathematical analysis of several related processes, including arriving at the queue, waiting in the queue , and being served at the front of the queue...
and delays at roundabouts. The software is largely based on empirical relationships which were the result of extensive research carried out on existing roundabout
Roundabout
A roundabout is the name for a road junction in which traffic moves in one direction around a central island. The word dates from the early 20th century. Roundabouts are common in many countries around the world...
s on the UK road network, as well as controlled test track and on street trials over a period of over a decade.
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 contains a link within to communicate automatically with CAD software to enable the traffic analysis of a proposed CAD design to be viewed in real time as changes are made.
ARCADY is listed in the UK's design manual for roads and bridges
Design Manual for Roads and Bridges
The Design Manual for Roads and Bridges is a series of 15 volumes that provide official standards, advice notes and other documents relating to the design, assessment and operation of trunk roads, including motorways in the United Kingdom, and, with some amendments, the Republic of Ireland .They...
.
RODEL is similar to ARCADY and utilises TRL equations under licence.
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.
ARCADY 7 - Current release
ARCADY 7 features a fully integrated graphical user interface. ARCADY 7 is capable of modelling systems of linked roundabouts.Features
- Improved Demand And Analysis Sets and Scenarios
- Modelling of Linked Roundabouts
- Interactive Junction Diagram
- Improved Graphing Features
- Modelling of Entry Restrictions
- Modelling of Exit Restrictions
- Puffin Crossing Model for Mini and Standard Roundabouts
- Direct Slope and Intercept Entry
- Output of Resultant Flows
- Output of Resultant Uniform and Random Queues
- Level of Service
- Peak Hour Factor
External links
Also a poet.
1590 T. WATSON Melib. 363 Diana matchlesse Queene of Arcadie. 1850 TENNYSON In Mem. xxiii. 24 To many a flute of Arcady.