Cities are growing faster than ever before, particularly in the developing world. But this breakneck urbanization brings a number of problems. Unchecked urban sprawl can lead to squalid living conditions and traffic gridlock.

More exotic is the brand new, planned capital city - but that has problems of its own.

Geetam Tiwari, Professor of Transport Planning at the Indian Institute of Technology in New Delhi, is an expert on urban transport. Read white paper Is road pricing the answer to congestion? here
Ricky Burdett, Centennial Professor in Architecture and Urbanism at the London School of Economics, founder of the LSE Cities Programme.
Read white paper		 The first 2006 Principal Voices roundtable of 2006 saw experts gather in Delhi to discuss urbanization and public transport. Read
Bill Reinert, national manager of advanced technologies for Toyota USA, is behind innovative hybrid vehicles likes the Prius. Read white paper

See all the Principal Voices		 Prinicipal Voices reader Linda M. Vaitkus explains how she learned -- eventually -- to give up her car. Read