• Ms Dimpal Sahu
• Dr Anil Suman

For the development of any country, transportation plays an important role. In the last few years, traffic has seen lots of changes, and for that, there have been lots of schemes and improvements, but when we give any facility or improve any existing facility, it is very important to check the performance of the facility. The level of service has been introduced in the highway capacity manual. Level of service actually shows the level of quality of facilities, and on that basis, they divided them into six different levels of service. This paper studies various parameters that will affect the LOS of urban roads.

Level of service, free – flow speed, highway,

"A REVIEW ON STUDY OF LEVEL OF SERVICE ON NATIONAL HIGHWAYS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.p328-p330, May 2023, Available :http://www.jetir.org/papers/JETIR2305G46.pdf

"A REVIEW ON STUDY OF LEVEL OF SERVICE ON NATIONAL HIGHWAYS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. ppp328-p330, May 2023, Available at : http://www.jetir.org/papers/JETIR2305G46.pdf