Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
The Wayback Machine - https://web.archive.org/all/20061231033835/http://www.trafficwatchni.com:80/motorway_network.asp
Roads Service commissioned
the first motorway control system in 1995,
co-inciding with the opening of M3 Lagan Bridge.
The system cost approx £5.5million and
was partly funded by the European Union. The
system is one of the most advanced in Europe,
and has the unique feature of providing data
communications between the motorway and urban
traffic control (UTC) systems. The motorway
system also includes the following facilities:
A driver information system
comprising rotating prism and electronic
variable message signs
Motorway lane control
matrix signs
Automatic
incident detection
Operational control from
either the Police or Roads Service control
rooms.
CCTV monitoring of traffic
flow
In 2001, Roads Service completed a
further £6million project that
included the replacement of the motorway
emergency telephones, extensions to
the facilities providing motorway control
and driver information, and the installation
of a new fibre optic and copper communications
infrastructure over the entire motorway
network.
Also, the motorway system
controls the variable message signs
and signals associated with the M1 Hardshoulder
Busway. Motorway signs and signals enhance
road safety and assist the effective
management of traffic by displaying
advisory speed limits or warnings of
lane restrictions. These signs are often
supplemented by information displayed
on the electronic message signs. On
the southbound carriageway of the M2
Foreshore, the average number of recorded
accidents has reduced by 15% since motorway
control was introduced. Roads Service
has an ongoing programme to extend the
motorway control and driver information
facilities to other parts of the motorway
network.
