请英文好的朋友帮助修改一下以下英文短文中的错误Singapore is viewed as a typical successful case about their urban transport planning,the local government successfully takes intensive program of new metro and a high vehicle tax structure into their urban planning to reduce the private cars on the roads.This action not only relieving traffic congestion but also reduction of greenhouse gas (GHG) emissions.

请英文好的朋友帮助修改一下以下英文短文中的错误
Singapore is viewed as a typical successful case about their urban transport planning,the local government successfully takes intensive program of new metro and a high vehicle tax structure into their urban planning to reduce the private cars on the roads.This action not only relieving traffic congestion but also reduction of greenhouse gas (GHG) emissions.