Two-wheel vehicle ownership is the most responsive to income growth in economies at around USD 1 000 to 3 000 per capita income (2007 prices), is the highest at per capita income levels of USD 10 000 to 20 000 and declines at higher income levels (OECD/ITF, 2012). Ownership of motorbikes and scooters is not as strongly associated with wealth as car ownership (Figure 2.7). Even in the Philippines - the country with the greatest gap in motorbike and scooter ownership between the top and bottom household wealth quintiles - only 34.6% of households with these vehicles were among the wealthiest and 7.2% were among the least wealthy. Rural and urban households also show more similar patterns in motorbike and scooter ownership than car ownership by wealth. Wealth indices are calculated using information on household ownership of selected assets, housing construction materials, and access to water and sanitation facilities.