• Umapathi
• Dr. Rajendra Khatawkar

For the present study four straight stretches are selected. In that two stretches are on NH-13 and two on NH-206 which connects Sollapur to Mangalore and Bangalore to Honnavara respectively. Classified traffic volume counts and spot speed has been carried out on four stretches. For each class of vehicles PCU values are determined based on their average speed and dimension by Chandra's method. Capacity is evaluated with respect to carriageway width and is compared with surface roughness of roadway which is measured by MERLIN. Road roughness is calculated by International Roughness Index (IRI). Obtained result shows that the increment of roughness decreases the capacity and in all the four stretches it is less than 3200 PCU/hr.

Capacity, PCU, MERLIN, Roughness

"Effect of carriageway width on pcu and capacity of two lane roads – a case study of shivamogga district ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.89-93, June 2019, Available :http://www.jetir.org/papers/JETIR1907610.pdf

"Effect of carriageway width on pcu and capacity of two lane roads – a case study of shivamogga district ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp89-93, June 2019, Available at : http://www.jetir.org/papers/JETIR1907610.pdf