The second Central Business District (CBD) should be well planned for all to live, work and play comfortably ("Second CBD must be viably different"; Wednesday).

One key focus is to ensure that there will be no traffic bottlenecks in the 360ha of land and lake that will become our second CBD, and to achieve it without having to resort to Electronic Road Pricing to keep vehicles out.

For this to be possible, the Land Transport Authority should consider building a ring-road seamless expressway, with parts of it underground, to go around this new CBD precinct so that vehicles are able to enter or exit from four directions free of hassle and restrictions.

In addition, I hope that there will be plans to build an underground city, including roads, below the lake to maximise the "land space" that is occupied by a vast expanse of water covering 70ha, thus leaving 290ha or some 80 per cent of land space for the development of this new CBD.

Tan Kok Tim