Western women who are traveling alone should have no reason to worry about approaching Thai men to ask for assistance, for example.
Shyness is a common trait of Thais and they also have a fear of shame; this means there are very few incidences of sexual harassment – something that is fairly common in some of the more fundamentalist countries.
While it is rare for Thai men to hassle Western females; it is wise to dress conservatively, particularly ensuring legs and shoulders are covered (except on tourist beaches) and to avoid any prolonged eye contact or flirtatious behavior.