2. What we’ll cover
• Types of transit networks and their
attributes
• Transit networks and placemaking
• Interaction between roadway
networks and transit networks
3. What’s a transit network?
Transit Network: the spatial configuration
of the individual lines of a transit system
5. What’s a sustainable transit network?
• Enabling: people can travel without
depending on private vehicles
6. What’s a sustainable transit network?
• Enabling: people can travel without
depending on private vehicles
• Efficient: consumes least amount of
resources for what you get
7. What’s a sustainable transit network?
• Enabling: people can travel without
depending on private vehicles
• Efficient: consumes least amount of
resources for what you get
• Fast: allows for timely travel
8. What’s a sustainable transit network?
• Enabling: people can travel without
depending on private vehicles
• Efficient: consumes least amount of
resources for what you get
• Fast: allows for timely travel
• Affordable: can be maintained in all
economic climates
13. Amorphous Networks
• Confusing
• Difficult to coordinate transfers
• Not a network that you’d ordinarily
design
• May be all that can be done on
older street patterns
23. Radial Networks
• Ideal for serving one central activity
center
• Inflexible to changes in activity locations
• Access any point on network with a
single transfer
• Can require out-of-direction travel
• Poor continuity on grid street systems
30. Grid Networks
• Ideal for area wide coverage
• Needs high density to justify frequent
service
• Best suited to grid street networks
• Greater likelihood of transfers
• Not convenient in low-density areas
38. Hub and Spoke Networks
• Ideal for serving many activity centers
• Less frequent service can still be
attractive
• Relatively economical to operate
• Timed transfers are essential
• Transfer facilities should be of high
quality
64. Conclusions
• Networks are unseen; understand
the big picture before tinkering with
the details
65. Conclusions
• Networks are unseen; understand
the big picture before tinkering with
the details
• Sustainable transit networks must
be enabling, efficient, fast, and
affordable
66. Conclusions
• To serve one principle activity node:
- Radial transit network is best
67. Conclusions
• To serve one principle activity node:
- Radial transit network is best
• To serve many dispersed activity
nodes:
68. Conclusions
• To serve one principle activity node:
- Radial transit network is best
• To serve many dispersed activity
nodes:
– Grid: frequent transit service in dense
areas with grid street system
69. Conclusions
• To serve one principle activity node:
- Radial transit network is best
• To serve many dispersed activity
nodes:
– Grid: frequent transit service in dense
areas with grid street system
– Hub-and-Spoke: for most other
situations
70. Conclusions
• Connectivity: connected streets
permit transit to reach riders and
riders to reach transit
71. Conclusions
• Connectivity: connected streets
permit transit to reach riders and
riders to reach transit
• Density: streets suitable for transit
service should be spaced every
half mile to ensure an easy walk to
transit
72. Conclusions
• Intense activities should be located
near a transit network’s points of
confluence