In an effort to tackle widespread sexual harassment on India's railways, the authorities have introduced female-only services in four of the country's largest cities.<br /><br />Packed into crowded carriages with men, women are often the victims of groping and catcalling.<br /><br />The trend has worsened as large numbers of women started to join the workforce during the past decade.<br /><br />As Supriya Sobti reports from Mumbai, many women say the new female-only carriages are a good start to addressing the problem.