Why doesn’t someone ‘pull up’ all the vehicles so there are smaller gaps in between them, therefore making room for more vehicles?

Pulling up vehicles to the absolute minimum is labour intensive and will slow down the overall loading if extra crew are not available to complete the task. Also, the process does not always achieve the desired effect, as the additional room produced may still not be large enough for the next vehicle in the queue.

Instead, we trust drivers to make their own reasonable judgement on approaching the vehicle in front. However, our staff will offer guidance or direction if the driver leaves a significant or unreasonable gap in periods of high demand.
Where resources permit, we allocate additional staff to ferry decks who are specifically tasked to marshal vehicles maximising capacity and reducing shoreside queues.