a
Appendix A: Definition & Concepts
WHAT IS MEANT BY MULTIMODAL CONNECTIONS? Corridor Alignment Criteria
Key Loop Mode Descrip- Major Minor Crossing DensCategory tion Spacing Spacing (Hub) ity Interurban Key destAs viable Nodes station or inations and > 4 NA where Rail major MM or at least mi needed 1/city crossing
Multimodal alignment refers to a desire line connection between districts, one that does not specify a route to achieve the connection. A route is a specified series of linked corridors that completes the connection identified by the alignment. Multimodal corridors are dedicated street segments, or rightsof-way, that connect multi-modal districts via a prescribed route. For each connection area a series of candidate corridors that can meet these criteria are determined.
Light Rail
The preliminary selection of the primary alignments are determined based on examining the possible district and node linkages with respect to the Primary Alignment Factors listed on the facing page. Secondary factors that can contribute to candidate corridor evaluation for inclusion in the multi-modal system include qualitative and quantitative measures such as the Route and Corridor Determination Factors also listed on the facing page.
Network connectivity and spacing After alignments are identified, the number of crossings and connections must be determined. Figure A.7 offers design standards for assessing this connectivity. The preliminary selection of multi-modal corridor alignments, crossings and connections form a network framework. From the framework, the details and characteristics of the system are developed.
<10 sq mi
Change lines
Key dest- As viable At inations and > 1 least 1/city mi or ~ 4 mi
BRT
Destination Crosses lacking fixed rail transit transit or <8sqmi
1-3 mi
0.5-1 mi 4/ as per sqmi demand
Bus
Crosses <2 sq mi transit or BRT
.25 mi
1-3 40/ blocks/ sqmi sqmi
Bike
Bike Port at major Connects bike to bus destination
1-2 mi
<0.5mi
Ped
1 sqmi for Placemajor making hub 1/4 crossing sqmi for minor
50/ sqmi
1/2 mi for fixed 1/4 mi 50/ transit for bus sqmi stop
Figure A.7 Connectivity Table excerpted from the MultiModal Corridor and Public Space Design Guidelines [1]. Connectivity is a measure of modal spacing and looping.
Planning a Multimodal Region
8 Final Draft 4/16/2010