INGENIEUR
traffic monitoring, management
and control. The Journey Time
Indication System (JTIS) in Hong
Kong (JTISHK) and Kowloon
(JTISK) is a prime example
(Figure 1). The JTIS functions to
disseminate real-time journey
information to motorists via LED
displays, an interactive voice
response system and an Internet
speed map so that motorists
are able to choose alternative
routes to cross the harbour
from Kowloon Peninsula to Hong
Kong Island and vice versa to
avoid traffic congestion. The JTIS
assists motorists to make an
informed route choice to cross
the harbour before arriving at the
critical diversion points.
Speed Map Panels
In 2013, five Speed Map Panels
(SMPs) were installed in the
Hong Kong New Territories that
provide a schematic map of road
traffic speed on major routes
bound for Kowloon (Figure 2).
The SMPs are located in advance
of traffic divergent points where
alternative routes are available.
The estimated journey time
through the available routes is
also provided.
While providing motorists
with real-time information to
make an informed route choice,
the JTIS and SMPs allow for a
better distribution of traffic on
roads, alleviate congestion and
reduce the travel time of road
users. This has the direct effect
of reducing fuel consumption
and pollutant emissions.
Open Road Tolling
In collecting the necessary
data on road traffic speed and
journey time, a hybrid detection
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VOL 58 APRIL 2013 2014
VOL 55 JUNE – JUNE
Figure 1: The Journey Time Indicator System LED time indicator in
Hong Kong displays the average journey time, in minutes, to cross
the harbour for each of the available routes. The digits are shown in
three different colours for different traffic conditions: red represents
congested traffic, amber represents slow traffic and green represents
smooth traffic. (Source: Hong Kong Transport Department Official
Website, http://www.td.gov.hk/)
Figure 2: The Speed Map Panels in Hong Kong displays the
schematic map of major routes ahead as well as the estimated
journey time. The displays are colour-coded with green, amber and
red to represent different traffic conditions: red represents congested
traffic, amber represents slow traffic and green represents smooth
traffic. (Source: Hong Kong Transport Department Official Website,
http://www.td.gov.hk/)