congestion

Variation in transportation performance is driven by uncongested mobility due to everyday road obstructions, not conventional traffic congestion

Congestion pricing is not as effective in reducing travel times as one might presume

Jitendra Bajpai of Columbia University outlines the three major accessibility problems facing cities in developing countries and policy ideas for how to overcome them.

When unpopular anti-congestion policies were abandoned in Indonesia's capital, we discovered flawed policy had been better than no policy