Quaternary activities are centred around research, development and may be seen as an advanced form of services involving specialised knowledge, technical skills and administrative competence. These have replaced all primary and secondary activities as the basis of economic growth.
Regional planning deals with the efficient placement of land-use activities, infrastructure and settlement growth across a larger area of land than an individual city or town to reduce regional imbalance in the development.
The primitive communities lived in harmony with their natural environment and as such the humans were naturalised because the people began to understand their environment and the forces of nature with the passage of time. With social and cultural development, humans develop better and more efficient technology. They move from a state of necessity to a state of freedom. They create possibilities with the resources obtained from the environment. Human activities create a cultural landscape. The imprints of human activities are created everywhere, giving rise to possibilities. Hence, in the similar sense, an interaction exists between primitive human society and nature, called environmental determinism. This is why humans were naturalised.
About half of the roads are unmetalled and this limits their usage and service during the rainy season.
Disrespect to the traffic rules is the major problem. Roads suffer from chronic traffic congestion, thus causing delay. Thus, these are the major three problems of road transport in India.