Documents
SCOOT Improvement Project and Measures of Effect in Beijing
With the rapid growth of the motor vehicles in Beijing, the traffic jam situation is
aggravated constantly. The function of SCOOT traffic signal control system has not
gradually adapted to the actual traffic demand. After analyzing and researching the
current situation and problems of existing SCOOT systematic operation in Beijing,
the construction objects are put forward according to the traffic characteristics and
system control characteristics within Second Ring Road in Beijing. Through choices
of investigating route and intersections and investigating date and by using the
method of before and after, a good effect is got and The operation status of the traffic
has got very great improvement after the system was implemented, demonstrating the
SCOOT system superiority of the single point control.
University of Technology, Beijing, China
Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California
Breathing Life into OEM Telematics Opportunities
As the consumer-specific telematics market shows new signs of life, companies in the
telecommunications and electronics industries are aggressively developing portable telematics
capabilities that link with existing devices. Left behind are the automotive OEMs and their
efforts to embed telematics devices in the dashboards of their cars. The relative merits of
embedded versus portable devices are examined and, using survey data on consumer
ownership of various communications devices from SRIC-BI’s Consumer Financial Decisions
proprietary database, this paper investigates OEM opportunities to move forward in the
telematics market. Given the distinctive assets of the vehicle platform, OEMs are in a position
to provide effective interfaces for portable devices, extend the devices’ abilities, and improve
driver interaction with them. Such an approach is in concert with the direction consumers are
moving, not only in telematics but in communications and information technologies as well,
and establishes a unique position for OEMs vis-à-vis other product offerings.
SRIC-BI, USA
SRI International, USA
Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California
Dynamic congestion pricing in a network with queue spillover
A combination of two dynamic models is presented to explore optimal congestion pricing in a
multi-destination network. Vickrey’s bottleneck model (1) deals with traffic demand while
traffic operations are described by the LWR traffic flow model (Lighthill and Whitham, 2 and
Richards, 3). The proposed combined LWR bottleneck model determines both user
equilibrium and system optimum network conditions. It provides some surprising insights in
the mechanisms of congestion. Congestion may be avoided by imposing an optimal dynamic
toll. This has a significant positive impact on the performance of a network. A paradox
appears where an optimal toll even lowers total trip costs and increases traffic demand,
without introducing congestion. Analysis with the combined LWR bottleneck model shows
that congestion pricing can be even more beneficial than accepted until now.
Katholieke Universiteit Leuven, Belgium
Transport & Mobility Leuven, Belgium
Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California
Experiences With An Operational Pilot Of Personalised Information Services To Public Transport
At present, online information services particularly serve the requirements of occasional users
who want to spontaneously get to know what is on offer regarding public transport. Fig. 1
gives an impression of the operational effort required for receiving a current departure time
from a WAP mobile phone. This form of providing information is however less attractive for
the majority of commuters. These passengers are familiar with the timetable and usually only
wish to know whether their connection is on time. The daily retrieval of information is
therefore in this case not a practical solution. On the other hand, there are passengers who are
strongly affected by changes to the normal timetable, especially those who have to travel with
infrequent trains, or those whose missing connection could amount to enormous costs
(connected flights) as well as those who use public transport daily.
Institut f. Automation und Kommunikation Magdeburg
Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California
The Control Of Traffic Using Variable Speed Limits The Uk Experience Of Controlled Motorways
This paper describes the work that has been undertaken to establish the business case for Controlled
Motorways. Since the introduction of the Controlled Motorways on the M25 in 1995, the Highways
Agency (HA) has commissioned a number of studies to optimise system performance and to quantify
the impact of the system with the aim of establishing the business case for implementation and
developing guidelines for future roll-out. This paper provides a summary of the work undertaken and
the key results from the M25 Controlled Motorways studies. It also describes work to develop a
Generic Business Case for investment in Controlled Motorways and the development of an
Assessment Tool which can be used to prioritise between alternative sites.
MOUCHEL PARKMAN
HIGHWAYS AGENCY
FABER MAUNSELL
TRL
Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California