What is taxi junior?

As an AI language model, I do not have access to current information about specific taxi companies or services. However, a "taxi junior" service sounds like it could potentially be a service that provides transportation for younger individuals, such as children or teenagers, with additional safety measures and supervision. Alternatively, it could also be a taxi service that specifically caters to families with children, offering car seats and other amenities to make traveling with kids easier and more convenient. Ultimately, without further information, it is impossible to say for sure what a "taxi junior" service would entail.