Ethernet

LAN

Loops /Radar / Video Loops / Radar / Video

SCATS QTC RMS Loops GR /Tyco Tild / Wavetronix / EIS /Trafficon

Ethernet Network

Fibre/ Wireless

Dynac

Golden River (GR) & Third party

Applications (Backup Service)

Used for maintenance and

calibration of Loops and

Detectors

Clustered NZTA abstracted

modular connector applications

designed to fit 99% of Loop

detectors and process

information into a simple SQL/

SNMP / NTCIP data feed for

Dynac and NZTA Performance

Metrics project whilst preserving

Loop ID and State information

Ethernet WAN Ethernet WAN

NZTA Performance

Metrics Project

Diagram notes:

Concept : Use abstraction layer to mitigate the

following issues:

1) Prevention of proprietary drivers and software

interfaces to third party applications (i.e. Loops at

position A could be replaced with Radar and no

change is required at Dynac end. Benefit – Money

and Support impacts

2) Removal of single points of failure and

dependencies – note failure or performance issues

with Dynac do not impact on Performance Metrics

Project or vice versa. Benefit – Higher levels of

service and resilience are possible

3) Discourages anti-competitive reactions from

vendors and invests intellectual property ownership

in NZTA. NZTA own Intellectual property for

middleware and can enforce standards with detector

vendors in tenders without vendors seeing this as

loss of competitive advantage – also means that

competitive tension is maintained in procurement

processes. Gives NZTA a big stick to hit non

performing vendors with i.e. no dependency issues.

(i.e. NZTA able to run any software it likes in parallel

with any software it has )

4) Allows Dynac to get information from SCATS

RMS without integrating to SCATS – SCATS is seen

as another detection device.

Ethernet LAN

SCATS

Ethernet WAN

Conceptual Middleware Detector Device Architecture Author: Dave Verma

Associate & ITS Technical

Expert

Beca Transportation

david.verma@beca.com

+64274708178

All rights reserved, this drawing and its contents are the intellectual property of the author. All other trademarks, brand names and copyrights are the property of their respective owners The views and opinions expressed in this document are conceptual, not necessarily those of the author’s parent company or

provided as specific design or professional advice. Reuse or dissemination of any of the concepts outlined on this document without the permission of the author are strictly prohibited.