For anyone flying into LGA airport in the future, this is an important development in the ongoing problem of picking up incoming passengers: This is from my son-in-law who works in the city.

Please be advised that there are new changes taking place as of today, October 16th, on all “For-Hire Vehicles” at LGA Airport terminals C&D. This new arrangement will affect passenger pick up times.
 
There is a new staging area being stationed at the Marina Lot for terminals C&D and the 94th St garage will be closed. In addition to this, a new metering system has been implemented to control the flow of traffic to the C&D Terminals. All cars MUST stage at the Marina Lot in order to enter the terminals and will be given a metered ticket to be able to do so. There is no entry to terminals C&D without a ticket from the Marina Lot and there is no loitering or standing inside these terminals.
 
PAPD may also periodically hold traffic at the Marina lot until traffic conditions at the airport clear.
 
Subsequently, we are advising passengers to call us when they are landing, as the driving time from the Marina lot to these terminals is approx. 20 minutes and during gridlock, could exceed 45 minutes.