SUMMARY
Purpose. The study reported here aims to investigate the commonest communicative categories and subcategories of graffiti written inside Jordanian public transport vehicles. Method. The researchers collected 1,410 tokens of graffiti from six Jordanian cities, viz., Amman, Madaba, Irbid, Zarqa, Salt, and Jerash. The data which were collected from public transport vehicles included 1000 handwritten graffiti tokens and 410 custom-made stickers. Specifically, the data were collected from large and small buses as well as service and yellow taxis that lined up in main bus stations and bus stops available in front of hospitals, universities, malls and close to traffic circles. Then the categories and subcategories of graffiti were identified on the basis of their content.Results. The analysis reveals eight communicative categories, viz., personal, interpersonal, philosophical, religious, offensive, political, humorous, and sports. The analysis also reveals thirteen subcategories, viz., naming and self-identification, self-appraisal, love and familial relationships, philosophical perspectives, ethics of transport, decline of morals, expressions of Islamic faith, supplication, preaches, protection from the envious eye, territorial and tribal affiliation. Conclusions The study concludes that a host of societal concerns and individuals’ feelings and thoughts are transmitted through the discourse of graffiti. The passengers and drivers have expressed their self-concentration, philosophical views, affiliation with territories and tribes, hostility and anger to individuals and groups, and allegiance to religion beliefs and traditions. The study also concludes that there are socio-psychological motives that drive writing graffiti, viz., identify oneself, release emotions, criticize individuals and groups, reveal pride and admiration, advertise goods and promote business, search for contacts, post messages for the public, express attachment to educational institutions, document the occurrence of a particular occasion. The study recommends that graffiti written inside public transport vehicles in other Arab countries be examined. Thus, one could examine to what extent the communicative categories and subcategories of graffiti along with its socio-psychological tend to show a pan-Arab base.