Hundreds of farmers on Monday blocked major highways, including National Highway 1 linking Delhi with parts of Haryana and Punjab, following a nationwide call by farmers' unions to demand scrapping of three Central farm laws.

Traffic across Punjab and Haryana is likely to hit badly and see traffic disruptions for several hours as farmers, farm labourers, commission agents, trade and employee unions and activists of political parties squatted on national highways till 4 p.m.