80% drop in cross-state taxi trips to Delhi airport due to BS-VI curbs; operators warn of losses, layoffs, and protests. The number of taxis ferrying passengers from neighbouring states to the Indira Gandhi International Airport (IGI) in Delhi has plunged by nearly 80% following restrictions on the entry of. BS-VI entry curbs slash Delhi IGI airport taxi from neighbouring states by 80%, crippling operators, driving losses and potential job losses.