The map indicates in four stages the development of Chorleywood，a small London village from 1868 to 1994.
As can be seen from the map,the first period was from 1868 to 18883. At this time，Chorleywood only had one small area and two crossing main roads. The next period was from 1883 to 1992. During this time，there emerged another habitation to the south of the original small area，which was almost twice bigger than the former one. In 1909，a railway，parallel with the eastbound main road，came into being. It went through the new habitation and formed an intersection with another main road as well. Next，from 1922 to 1970，along the western part of the newly built railway，two large areas took shape. Finally，1970 saw another great change in Chorleywood . A southbound motorway was built linking the railway and the eastbound main road. Since then another five living areas were founded，scattering along the motorway.
Therefore，the map reveals that thanks to the construction of railway and the motorway，the land of Chorleywood expanded significantly from 1868 to 1994.