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Improved origin & destination data through data fusion
system  26. July 2013 at 13:01   more

Project Background


The data that can be collected through road side interviews (RSIs), e.g. origins, destinations & journey purpose, is very important for model building, forecasting and project development. These data are also very important for supporting network operations and future policies and developments such as road user charging, IDM & HOV lanes. For reasons of congestion and safety, RSIs have become increasingly difficult to undertake. A consequence is that trip matrices have become over-reliant on old data or the use of a mathematical technique known as entropy-based matrix estimation (ME), which uses entropy maximization to infill the missing data from traffic counts. However ME cannot make use of other...
Journey Time Variability on Motorway Links
system  26. July 2013 at 13:01   more

Project Background


This study aims to improve the Agencies understanding of day to day variability, and hence improve its understanding of reliability. This work is an important step towards the appraisal of schemes for effects on day to day variability (reliability)




Project Objectives


Increase the HA's understanding of the relationship between demand, flow breakdown and day to day journey time variability (reliability). 1. Process and analyse various items of data (relating to travel times and the variability of travel times) collected on the M6 north of Birmingham during 2003. 2. Develop, calibrate and validate micro-simulation-based model of travel time variability 3....
Water Use in the Supply Chain
system  26. July 2013 at 13:01   more

Project Background


The Highways Agency service providers need reliable supplies of water for use in construction, maintenance and operation, as well as for health and hygiene on site and in Depots. Water resources in certain regions of England are under stress through over exploitation, over licesning and limited additional supply capacity during drier periods. Population growth of an additional 10 million people by 2033, combined with the seasonal supply and demand impacts of climate change will increasingly threaten the security of supply and the health of water environments. The operations of the Agency and the supply chain will inevitably have some impact upon water resources.  In addition, the location of sites or...
Managed Motorways 2 Concept Development – Simulation Studies
system  26. July 2013 at 13:01   more

Project Background


Since 2009, the High­ways Agency (HA) has been inves­ti­gat­ing how to more effectively tackle congestion on Managed Motorways (MM) and deliver, operate and maintain the schemes more efficiently, whilst con­tin­u­ing to meet the Agency’s safety objec­tive.  This has resulted in a new approach to the design and oper­a­tion of Man­aged Motor­ways (MM) schemes known as ‘Man­aged Motor­ways – All Lanes Run­ning’ (MM-ALR). The approach subsequently received approval from the Sec­re­tary of State to pro­ceed with devel­op­ment work and imple­men­ta­tion, and in March 2012 the HA issued new design guid­ance for MM schemes in the form of Interim Advice Note 161/12 Man­aged...
Future Managed Motorways Concept Development - Simulation Studies
system  26. July 2013 at 13:01   more

Project Background


Since 2009, the Highways Agency (HA) has been investigating how to more effectively tackle congestion on Managed Motorways (MM) and deliver, operate and maintain the schemes more efficiently, whilst continuing to meet the Agency’s safety objective.  This has resulted in a new approach to the design and operation of Managed Motorways (MM) schemes known as ‘Managed Motorways – All Lanes Running’ (MM-ALR). The approach subsequently received approval from the Secretary of State to proceed with development work and implementation, and in March 2012 the HA issued new design guidance for MM schemes in the form of Interim Advice Note 161/12 Managed Motorways Requirements – All Lanes Running...
DBFO Detectors - Exploring Cost Reductions
system  26. July 2013 at 13:01   more

Project Background


Netserv have been commissioned by the DBFO Central Group to look at the verification processes carried out by DBFO Teams The verification forms part of the process in determining the amount payable to DBFO Co's and in looking into this  the intention is to compare how this is achieved throughout the various routes and to identify where the process may be improved with possible cost savings.




Project Objectives



  • Investigate the verification process, how accurate it is and whether there are any areas where it can be improved.

  • Look at Way we Work processes for Measurement of Traffic and Verification of Traffic Measuring Equipment...
Storage of Processdata in Tunnel-SCADA
ARAMIS  18. July 2013 at 14:30   more
When investigating the causes of incidents in tunnels (accident, fire, system failure), the occurred events need to be reconstructed chronologically. For this reason, every activity of the different facilities must be recorded and stored automatically by law. Special attention is given to the monitoring of equipment condition, switching mechanism and configuration changes.

Process data are usually managed, analyzed and filed locally by the operator of SCADA-systems. Different requirements and a diversity of providers hamper a coordinated and centralized data storage. As a consequence, following disadvantages may arise:

· Difficulties when analyzing process data. If data on higher level than the SCADA level are...
Harmonisation of procedures and user interface in Tunnel- Process Control Systems
ARAMIS  18. July 2013 at 14:30   more
Compared to open roads, the safety risks in tunnels are particularly high. Therefore is the density of safety equipments in tunnels accordingly high.

Depending on the tunnel up to 20 safety equipments can be used. In general, several tunnels are monitored and controlled by the same operations center. Users of the operations control must be able to serve all individual plants

For the operation and control of the safety equipments in the tunnels, the different user interfaces can be used. The operating procedures are also very heterogeneous. This is the result of on the one hand historically grown requirements, on the other hand by the variety of suppliers and their solutions. Thus the standardised operation of...
Influence of the Binder Coverage of Mineral Aggregates on the Mechanical Properties of the Bituminous Mixtures,
ARAMIS  18. July 2013 at 14:30   more
The dissociation of the binder from mineral aggregates is causing several kinds of damages. According the Swiss standard SN 640'925, typical damages are:
- Loss of material, deterioration of the surface
- Cracking, due to weakness of adhesion combined with mechanical stress
- Potholes
- Insufficient interlayer adhesion and blister formation
In case of extended dissociation the bearing capacity of the layer is lost
The standardised procedure to determine the coverage of aggregates in Switzerland (SN 671'960) should be validated. Mixtures having a well defined coverage are produced The specimens are on the one hand immersed in water at specified conditions and finally tested mechanically, on the other hand...
Conceptual Interfaces between PMS-, BMS- and EMS-Databases
ARAMIS  18. July 2013 at 14:30   more
Organizations responsible for the integrated road management system, need a respective information system to fulfill their demanding tasks. This system is, among others, based on different data bases, typically called road data bases.
For the respective needs of the different road management domains, besides of the fundamental base data, partial system's data bases are needed for the pavement management PMS, the bridge management BMS and the equipment management EMS. These data bases can be characterized by huge data volumes and different referential systems, as for instance the temporal reference and different spatial reference systems. ( planar and linear spatial reference systems as well as geometric definitions and topological...
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