← Lessons 28-Customs Transit Systems Quiz 0 / 12 read 1. INTRODUCTION 2. COMMON TRANSIT CONVENTION 3. THE NEW COMPUTERISED TRANSIT SYSTEM 4. PRE-NOTIFICATION 5. CARNETS 6. TIR CARNETS 7. ATA CARNETS 8. CARNET DE PASSAGE EN DOUANE 9. CONCLUSION 10. REVISION SUMMARY 11. Quick Exam Numbers / Facts – Memorise These 12. Final Memory Checklist 11. Quick Exam Numbers / Facts – Memorise These 4 main customs systems: CTC, Pre-notification, TIR and ATA. NCTS = New Computerised Transit System. TAD = Transit Accompanying Document. MRN = Movement Reference Number. Trader Identification number = 12 digits (source material). CT guarantees remain 'live' for 12 months (source material). Individual Guarantee – generally up to 3 movements/year (source material). TIR Carnet maximum validity = 75 days (source material). TIR Carnet return period stated for RHA/Logistics UK = 10 days after discharge. TIR guarantee liability limit stated = US$50,000 per Carnet (source material). TIR claim payment period stated = 3 months. TIR vehicle approval GV60 validity = 2 years. TIR plates = 250 mm × 400 mm; front and rear. ATA Carnet validity = 1 year. Carnet de Passage validity = 12 months.