| One of the "smart mobility" initiatives in the "Hong Kong Smart City Blueprint" promulgated in December 2017 is to install traffic detectors on all strategic routes to provide real-time traffic information. TD took forward this initiative in two phases. The first phase consisting of about 550 traffic detectors along some strategic routes commenced in June 2018 and the second phase consisting of about 660 traffic detectors along the remaining strategic routes and major roads commenced in June 2019. The installation works of all traffic detectors were completed in end 2020. |
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| Three types of traffic detectors are installed for different purposes: |
| (a) |
video detectors (Plate 1) – these detectors collect data on traffic speed and volume and automatically detect traffic incidents on roads through video analytics, and output snapshot images; |
| (b) |
automatic licence plate recognition detectors (Plate 2) – these detectors collect traffic volume of different vehicle classes on roads through matching of licence plate numbers captured by the detectors and TD's vehicle licensing system; and |
| (c) |
Bluetooth detectors (Plate 3) – these detectors generate data on average vehicular speed and journey time by detecting Media Access Control addresses of Bluetooth devices in vehicles. |
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Data captured by the detectors including the snapshot images are disseminated through TD's website, mobile applications and the Government's public information portal "data.gov.hk". The collection and processing of the captured data are in compliance with the Cap. 486 Personal Data (Privacy) Ordinance.
Relavant datasets of traffic detectors are as follows:
With all strategic routes and major roads equipped with traffic detectors (as shown on the location plan below), the Transport Department can comprehensively monitor the traffic conditions of these roads, strengthening our capability in handling traffic incidents as well as traffic management. In addition, more real-time traffic data and information provided for public use, can assist the public in better planning of their journeys and selecting suitable routes or transport modes.
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| Plate 1 – Video Detector |
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| Plate 2 - Automatic Licence Plate Recognition Detector |
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| Plate 3 – Bluetooth Detector |
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| Detector Location Plan |