The highway research board was set up in year 1973 by IRC to give good guidance for road development in India.

Urban roads are classified into Arterial roads, Sub arterial roads, Collector streets and Local streets.

The engineering studies are conducted to assess topography, soil, location and classification of existing roads and or developments.

The tresaguet method was developed in 1764 AD in France after fall of Roman Empire, in later years better methods were developed.

Bituminous roads are convenient to use compared to or roads because y can easily drain off water and are comfortable to use during rainy season.

Planning based on factual data and analysis may be considered scientific and sound.

The Phase II of NHDP consists of linking east west corridor from Porbandar in Gujarat to Silichar in Assam.

The Nagpur plan assumed star and grid pattern in which it assumed to connect all nearby important cities and villages to National capital.

The sources of income, excise duty, registration charges and tax all are studied in financial studies only.

The slope provided is 1 in 36, it was proposed by Macadam. He also completely changed construction methods that were used earlier.