THE IMPORTANCE GIVEN TO THE ANALYSIS AND MEASUREMENT OF ACCESSIBILITY TO DETERMINE THE MOBILITY OF PEOPLE, ALLOWS US TO RECONSTRUCT FROM GEOGRAPHY, THE CONCEPT OF TERRITORIAL EQUITY AND APPLY IT AS A FACTOR TO ACHIEVE DEVELOPMENT. THE STUDY DETERMINES ACCESSIBILITY IN THE ÑUBLE REGION, RECORDING TERRITORIAL INEQUALITIES, AS A FIRST INSTANCE OF INFORMATION, WHICH IS COMPLEMENTARY TO THE ANALYSIS OF THE CHARACTERISTICS OF PUBLIC TRANSPORT, THROUGH INFORMATION COLLECTED FROM OFFICIAL SOURCES AND DIRECT OBSERVATION. THE MEASUREMENT ALLOWS CREATING INDICATORS THAT ASSOCIATE DATA ON POPULATION, COMMUNAL AREA AND LEVELS OF ACCESSIBILITY WITH COVERAGE, ROUTES, FREQUENCY, CAPACITY, DISTANCE TRAVELED AND PRICE OF PUBLIC TRANSPORT. THE RESULTING POLYNOMIAL IS ASSESSED AS TERRITORIAL EQUITY, WHICH PROVIDES INFORMATION THAT ADMITS QUESTIONS ABOUT THE CHARACTERISTICS OF THE DEVELOPMENT MODEL