Compared with the aura of security offered by riding inside of an automobile, many people avoid transit because they feel vulnerable and threatened by other riders.
Crime, sexual harassment, and other invasions of privacy are common on metro systems throughout the world. Sexual harassment is especially bad on Tokyo subways, and a survey of 600 women transit riders in Paris found that 100 percent of them reported having been sexually harassed.
Such harassment often depends on the anonymity that comes with extreme crowding, but most American transit systems don’t get that crowded precisely because Americans won’t accept the invasions of personal space required for such crush conditions. Still, there are numerous complaints of sexual harassment on the New York City subway. Crime is rapidly rising on the DC Metro as well.