Singapore maintains a quota system of ethnicities through the Ethnic Integration Policy.[6] By ensuring that each block of units are sold to families from ethnicities roughly comparable to the national average, it seeks to avoid physical racial segregation and formation of ethnic enclaves common in other multi-racial societies. In practise, while ethnic enclaves were avoided, some towns remained traditionally popular for specific ethnic groups. For instance, towns such as Bedok, Tampines and Woodlands have a slightly larger proportion of ethnic Malays above the national average