Final answer:
Both black car and livery car service bases provide pre-arranged transportation services, with the main difference being the level of luxury offered.
Step-by-step explanation:
One aspect that is not a difference between a black car base and a livery car service base station is that both are required to provide pre-arranged transportation services for passengers. The main distinction usually lies in the level of luxury and sometimes the type of services each provides. For example, black car services are typically more premium and offer a higher level of service with more luxurious vehicles, while livery services, also known as car services, might offer more affordable options without the same prestige associated with black car services. However, both operate on a pre-arranged basis unlike standard yellow taxis which can be hailed on the street without a prior booking.