nevertheless the data show that road density might reflect also the area and population of the country its physiography and demography see for example the relatively low road density in canada australia norway and finland and the russian federation as well as various other factors related to social and economic development it is interesting to note that although an increasing trend of road density with the human development index hdi might be discerned at the national level fig ure there is not however a strong correlation it sets o minimum ond o maximum for eoch dimension colled goolposts ond then ossesses country standing in relotion to these goolposts expressed os o value between ond