The transport department has to rely heavily on police and frontline staff to report traffic conditions in blind spots not covered by closed-circuit television, a transport official said yesterday.
Chief transport officer Albert Su Yau-on said Prince Edward Road East, where scaffolding fell during last Monday's storm, was among the blind spots that was out of the control room's surveillance.
The scaffolding left all four eastbound lanes blocked for nearly 19 hours.
Mr Su told RTHK's City Forum that 400 cameras had been installed so far across the city.
'A lot of places remain out of our surveillance. We have to rely on policemen and our department staff to inform us about the traffic situation at some blind spots in case of accident or emergency.'
But legislator Lau Kong-wah, chairman of the transport panel, said: 'The problem of blind spots is not really with road traffic, but it is more a blind-spot problem with the co-ordination and responsibilities among government departments.'