Driving a bus, according to an article in SLATE, is a "potent stress cocktail." It is also one of the most hazardous occupations for your health.
For this reason, drivers should support each other and make life as pleasant as possible. This includes harassing and teasing co-workers--anything that might make them feel uncomfortable.
The company feels so strongly about Sexual Harassment that they made it a Level 5 infraction.
Rule 1.23 Sexual Harassment
HRT will not tolerate sexual harassment of its employees. Sexual harassment is a form of sex discrimination prohibited by Title VII of the Civil Rights Act of 1964. In keeping with our policy against sex discrimination and with our obligations under Title VII, we will not tolerate sexual harassment by any of our employees.
According to the Equal Employment Opportunity Commission (which is the federal agency that enforces Title VII), sexual harassment is defined as UNWELCOME sexual advances, requests for sexual favors, and/or other verbal or physical conduct of a sexual nature.
Refer to the HRT Sexual Harassment Policy.