1.INTRODUCTION; 1.1. Growth of regional airports; 1.2. Implications for policy makers; 1.3. Objective of this paper; 2. DEFINITIONS OF ACCESSIBILITY 3. ACCESS MODE CHOICE 3.1. Observed access mode shares 3.2. Factors influencing access mode choice behaviour 3.3. Modelling access mode choice behaviour 4. AIRPORT CHOICE 4.1. Factors influencing airport choice behaviour 4.2. Modelling airport choice behaviour 5. CASE STUDY: THE EFFECTS OF THE INTRODUCTION OF NEW RAIL MODES 5.1. Introduction 5.2. London Heathrow – Heathrow Express 5.3. London Gatwick – Gatwick Express 5.4. Oslo Gardermoen – Flytoget 5.5. Stockholm Arlanda – Arlanda Express 5.6. Conclusions 6. CASE STUDY: TICKET TAX IN THE NETHERLANDS 6.1. Introduction 6.2. AEOLUS model 6.3. Simulation of a ticket tax 6.4. Effects by segment 6.5. Final implementation 6.6. Conclusion 7. CONCLUSIONS 8. REFERENCES