(a) On what date were taxi drivers informed that passenger pick-up points would change to the first floor parking area at the O R Tambo International Airport, (b) how was the specified change communicated to (i) taxi drivers and (ii) passengers, (aa) initially and (bb) on an on-going basis, (c) how is it monitored to ensure that passengers are picked up only at the designated area and (d) what are the penalties for taxi drivers that transgress the specified pick-up change?