About 40 per cent of women surveyed in Delhi said they have been sexually harassed in a public place such as a bus or park in the past year, with most of the crimes occurring in the daytime, researchers said.
Further, 33 per cent of women have stopped going out in public and 17 per cent have quit their jobs rather than face harassment in public places.
Nirbhaya became the pseudonym given to the gang rape victim whose death in 2012 brought worldwide attention to violence against women.
"Women in India do not feel safe being in public spaces, which is clearly a human rights issue," Nalla said.
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While sexual harassment is a problem experienced by women worldwide, it may be more prevalent in emerging democracies such as India and other countries in South Asia where women are becoming more involved in the workforce, said Nalla.
Nalla and Manish Madan, assistant professor at Stockton University, surveyed about 1,400 men and women in the capital city of New Delhi on a host of issues including perceptions and history of sexual harassment, use of public transportation, safety in public spaces and police effectiveness in dealing with these concerns.
Researchers found that 40 per cent of female respondents were sexually harassed in the past year and 58 per cent were sexually harassed at least once during their lifetime.
While both men and women generally considered all incidents serious, men considered them considerably less serious, illustrating "a disjunction between how males and females think," Nalla said.
Sexual harassment of women in public spaces in India and elsewhere in South Asia - known as "Eve teasing" - has long been a common occurrence, particularly by groups of young male perpetrators, he said.
The December 16, 2012 rape and murder of Nirbhaya by a group of men on a moving bus in Delhi brought about new laws for rape and criminalised voyeurism and stalking.
The research was published in the journal International Criminal Justice Review.