Distances travelled vary considerably between cities as well, the length of the average trip by car is 14.2 km in Mumbai, but only 3.1 km in Bhopal. The pump price per litre of diesel varies across the region, from USD 0.22 in Brunei Darussalam to USD 0.81 in China and India, while that of gasoline ranges between USD 0.37 in Brunei Darussalam to USD 1.25 in Singapore (Figure 2.9). Fuel prices can account for a large share of drivers’ transportation costs (Box 2.4). These prices are affected by taxes, which are often designed to generate revenue and to price the environmental effects of vehicle emissions.