We are restricted to a speed of 30 miles an hour in built up areas 在房屋林立的地区,车速限制为每小时30里。
The designated areas , referred to as densely populated built up areas , are defined under the noise control construction work designated areas notice 指定范围指人口稠密的已建区,由噪音管制建筑工程指定范围公告界定。