PROJECT PROFILE

EXPRESSWAY MONITORING AND ADVISORY SYSTEM FOR SINGAPORE

CUSTOMER

Land Transport Authority of Singapore

GENERAL

The Expressway Monitoring and Advisory System (EMAS) is a state of the art electronic traffic management solution to help in the management of traffic incidents along the expressways. As a result, motorists can now look forward to improvement of road safety, traffic fluidity and further reduction of traffic accidents.

The EMAS operates based on the principles of Detection, Verification and Control. The Central Control System (CCS) of the EMAS is responsible to link up the Detection, Surveillance, Traffic Information and Control System, the emergency telephone sub-systems to perform the functionality of:

Traffic data acquisition, computation and displaying real-time traffic trends.

Incident detection algorithms using complex to generate traffic alerts.

Perform travel time calculation. Perform traffic data gathering for analysis. Generate response plans for Traffic Police,

Television Corporation of Singapore, Radio Corporation of Singapore and Glide Control Centre etc.

Monitor operational status of all on-site and Tunnel Control and management equipment.

Hosting of traffic information on the Internet for the general public.

SINGAPORE TECHNOLOGIES ELECTRONICS LIMITED 24 ANG MO KIO STREET 65 SINGAPORE 569061

TEL: (65) 6481 8888 FAX: (65) 6482 1803 WEBSITE: www.stee.stengg.com

( Regn. No.: 196900084E )

SYSTEM CONFIGURATION The heart of the Expressway and Monitoring System is the Central Computer System located in the Operation Control Centre in River Valley. It is configured as a Client-Server Architecture. The CCS functions both as a server to its operator workstations and as a client to the Front End Logical Server of the various sub-Systems. A high speed backbone 100 base Ethernet network provides the interconnection infrastructure for the CCS Servers, CCS Workstations, Front End Logical Servers (FELS), Print Servers, Projection Screen Servers etc.

The CCS system operates on a UNIX operating platform, the servers are configured for redundancy to increase the System Availability. The configuration of redundancy allow for the fail-over of processes from the Main CCS Server to the Backup CCS Server. The Client Server Architecture of the CCS system also allows interconnection of services through TCP/IP, all messages interchange between the various Front End Logical Servers are through these TCP/IP connections. The various sub-systems are interfaced to the CCS through its respective FELS. These are as follows: Detection Sub-System

Surveillance Sub-System Traffic Information and Control

System Emergency Telephone System Tunnel Management System Internet Web Interface Such interfaces allow the realization of an Advanced Expressway Traffic Management System using the parameters of Detection, Verification, Control and Management. SCOPE OF WORK Project Management System Design Equipment supply and software

development Installation of equipment Testing and commissioning Warranty and maintenance Operations of the EMAS control

centre

ITMS : Integrated Transport Management System LUS : Lane Use Signal TID : Travel Information Display VMS : Variable Message System TTD : Travel Time Display ETS : Emergency Telephone System TSD : Traffic Signal Display PMCS : Plant Management Control System TED : Tunnel Equipment Display FELS : Front End Logical Server

Web Server CCS Servers

Main Backup Workstations

#1 #5 Laser Printer

Colour Printer

Clock

GPS

UPS

SLE

AYE

Video Projection Wall

Traffic FELS

PMCS FELS

Video FELS

ETS FELS

ITMS FELS

VMS FELS

TID TTD

TSD TED

LUS

Terminal Server

Modem Tele-Communication to TV Station, Radio

Station & Traffic Police

Fax

System Architecture for Expressway Monitoring and Advisory System