When it comes to public transit, "flexible" is usually a negative attribute. If you rely on public transit, you want reasonable guarantees that the service will

When it comes to public transit, "flexible" is usually a negative attribute. If you rely on public transit, you want reasonable guarantees that the service will be there in the future. If it's too flexible, someone will eventually ruin the service for you by changing it too much. Public transit is also called mass transit, which gives a better idea of what the service is about. Traffic is a necessary evil. It's not valuable in itself but only as a means to an end. Mass transit works best in urban areas, where it maximizes throughput while minimizing the space wasted for traffic. The resulting urban topology is different from that arising from individual modes of transport. Instead of a grid of streets, you get a network of walkable neighborhoods. And much less traffic per person.