• Maharshi Patel

The traffic on the road is increasing very fast with different types of vehicles having different static and dynamic qualities. Due to unrestricted movements all fast- and slow-moving vehicles without any separation, the roads will face severe congestion and lower speeds. The two-lane highways achieve its greatest limit soon and require consistent upgradation. In the study, traffic volume will be collected for whole 3 days at National Highway. Also, PCU values at selected stretches on highways are computed and by using those values capacity will be estimated and compared with the regression equation values. The values will be verified with IRC values. It is found that with the increase in lane width, speed substantially caused increased in PCU value. Also, we developed linear regression equations to estimate capacity and compared those values with the values as we got using Chandra’s method. In most of the cases the error is observed to be less than 3%. The percentage error is in the range between 0.84% and 2.83% which is very marginal. Finally, from the study it has been observed that increase in lane width and traffic stream speed obviously increases the capacity they’re by increases both comfort and safety of the road users.

Traffic volume count, PCU, Mean speed, Capacity, Linear regression equation.

" Comparative study of the methods used to estimate the capacity of National Highway with undivided two lane ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 6, page no.c207-c211, June-2022, Available :http://www.jetir.org/papers/JETIR2206226.pdf

" Comparative study of the methods used to estimate the capacity of National Highway with undivided two lane ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 6, page no. ppc207-c211, June-2022, Available at : http://www.jetir.org/papers/JETIR2206226.pdf