Under MOT Order 2021 No. 16, what is the mandatory operational rule for cruising taxi drivers picking up passengers at dedicated airport, railway station, and transit hub taxi staging areas?

1. Drivers may freely solicit passengers near terminal arrivals doors before entering vehicle lanes
2. Drivers must enter designated taxi queuing lanes in sequence, obey on-site marshal directions, and cannot pick and choose passengers or solicit off-meter fares
3. Drivers may skip the queue if their vehicle is an electric new energy vehicle
4. Drivers can negotiate flat cash rates with departing long-distance passengers while in queue