In an attempt to enhance "braking reliability and ensure safety" in emergency situations, Hong Kong Tramways Limited (HKT) is all set to install an electromagnetic braking system in the city's trams.

The HKT announced Monday that these iconic cars, which run at a speed of 30 kilometers an hour, can be stopped within a distance of 15 meters through the existing Emergency Brake Handle system. But with the new electromagnetic brake in place, the distance can be shortened to 10 meters.

"This is a significant breakthrough," said Steven Chan, senior engineering manager of the HKT. This 5-meter improvement is vital to prevent accidents, especially when a tram takes a sudden turn or crosses on the trail.

A field trip on a tram with the new electromagnetic braking system in place has won people's approval. Most passengers who rode the tram reportedly said they felt all right despite the suddenness with which the tram stopped.

The new braking device consists of two electromagnetic bars and inductive coils. When the track brake is activated, the tram stops, thanks to the strong friction between the electromagnetic bars and the steel rails, Chan explained.

In fact, from now on two braking systems will co-exist. The new emergency brake will be used only when the existing system proves inadequate or fails.

"The main purpose is to avoid accidents and casualties," Chan added.

What's more, panels with names of tram stops will also be introduced to help pedestrians and passengers. There will also be "passenger-friendly maps" with tram stops, nearby tourist points and transport hubs written on them, according to Maggie Yan, marketing and customer services officer of the HKT.

The electromagnetic braking system is part of the HKT's HK$80-million Safety Category Improvement Plans. This constitutes 40 percent of the HKT's HK$200-million blueprint.

The electromagnetic braking system will be installed in 163 trams in the next six to seven years.

China Daily

(HK Edition 09/21/2010 page1)