The Policy and Planning Division has the following authorities:
                  1. Plan, survey and store traffic data, and analyze the cause and solution to traffic issues.
                  2. Study, analyze and develop main and supplementary mass transit system projects as well as the transitioning system for public transportation.
                  3. Develop a master plan and development plan for transportation in Bangkok as well as information technology implementation plan and develop a traffic and transportation computer program.
                  4. Specify traffic engineering standard.
                  5. Organize Bangkok traffic system as a road network.
                  6. Analyze and design the feasibility of road network to improve and solve traffic problems and propose a safety policy and plan.
                  7. Develop a data storage and a supporting system on executive decision making.
                  8. Publicize and provide information on traffic and transportation and other related information through online media. Urge traffic discipline. Develop and publicize discipline in traffic to both the adolescents and the people.
                  9. Other related or assigned duties.
with internal divisions as follows:
                 The General Administration Section has the following authorities:
                             1. Correspondence and general administration
                             2. Human resources and disciplinary
                             3. Budgeting, financing and accounting
                             4. Supply work
                             5. Public relations
                             6. Administration and coordination, conference, secretarial work 
                             7. Premises and vehicle supervision work
                             8. Other related or assigned duties
                The Statistics and Research Section has the following authorities:
                             1. Gather, analyze and disseminate the statistic information on traffic and transportation as well as other related information.
                             2. Conduct research on traffic and transportation as well as related work to support administration, service and academic work of the department.
                             3. Quality control over the statistic and research on traffic to meet academic standard.
                             4. Prepare traffic and transportation annual report.
                             5. Survey and analyze people’s feedback on works related to the department’s main roles.
                             6. Provide statistic and academic information to internal and external departments as well as other interested parties.
                             7. Provide consultation, advice and participate in research conducted within the department.
                             8. Collaborate or aid the collaboration with related departments within and out of Bangkok to integrate the statistic and research data on traffic and transportation.
                             9. Provide statistic data and research on traffic and transportation for planning, laying out strategy and policy and making decision in executing works.
                             10. Other related or assigned duties.
                The Traffic Informatic Center has the following authorities:
                             1. Prepare master plan and informatic technology implementation plan for the department.
                             2. Study, analyze, design, develop the database and prepare the Geographic Information System (GIS) to support the executive work and decision making as well as provide service related to traffic and transport to the people.
                             3. Prepare traffic and transportation and road safety database to support the decision makers.
                             4. Study, design, prepare and manage the department website and other technological media.
                             5. Study, analyze, design, install and supervise computer network system internally and externally in the department.
                             6. Train, educate and instruct computer hardware and software knowledge to the department personnel.
                             7. Other related or assigned duties.
                 The Planning and Evaluation Section has the following authorities:
                             1. Study and analyze the feasibility of the department plan and project as well as integrate the collaboration plan with related sectors and implement those plans.
                             2. Follow up, coordinate and give consultation in strategic and action planning.
                             3. Evaluate plans, projects and report implementation of Bangkok strategic plan results as well as public sectors action plan and other related plans.
                             4. Follow the traffic and transportation safety plan.
                             5. Study, analyze, develop, advise and disseminate on traffic and transportation safety.
                             6. Coordinate, direct, follow up, analyze, evaluate and adjust traffic and transportation safety action plan according to circumstances and technology variation.
                             7. Study, analyze, disseminate and encourage training, meeting and seminar on traffic discipline for minor and general public.
                             8. Other related or assigned duties.
                 The Traffic Academic Section has the following authorities:
                             1. Study, survey and analyze the feasibility of projects to prepare a master plan as well as traffic and transportation investment plan.
                             2. Study, analyze, survey and design bicycle path and its parking spot improvement and construction in Bangkok.
                             3. Study, survey, analyze and plan to propose traffic and transportation safety policy and measure.
                             4. Coordinate between inland and foreign country on traffic and transportation academics as well as traffic safety of other departments.
                             5. Study, analyze, survey and design ways to improve traffic and transportation in Bangkok.
                             6. Organize academic trainings on traffic and transportation for the department and other related department officers.
                             7. Other related or assigned duties.