Retrofits
Retrofit Strategy Index
Every Retrofit Strategy currently in the Commonway System, grouped by scale: Network, Corridor, and Intersection. See How to read a retrofit strategy for what each part of a Retrofit Strategy entry covers and how it relates to the Pattern catalog.
A Pattern describes what a street should be. A Retrofit Strategy describes how to move an existing street toward one. This index lists the strategies; Patterns has the destinations.
#Network level strategies
Network strategies change how an area functions as a whole, typically by restricting motor vehicle through-traffic without changing any single street's underlying topology classification.
1Modal filtering / Low Traffic Neighborhood retrofit
2Superblock retrofit
3Barrier-crossing / network reconnection retrofit
#Corridor level strategies
Corridor strategies change a single street segment's cross-section: lane count, lane width, curb use, or surface. Most can move through the construction spectrum starting from paint and temporary materials.
1Four-to-three lane road diet
2Five-plus lane reallocation
3Lane diet
4One-way to two-way conversion
5Parking-lane reallocation
6Transit priority lane retrofit
7Protected bike lane retrofit via lane-width reallocation
8Protected bike lane retrofit via lane removal
9Protected bike lane retrofit via parking reduction
10Depaving / pavement-to-gravel conversion
112+1 road with cable median barrier
#Intersection level strategies
Intersection strategies change how a single intersection controls conflicting movements. Several of these require real construction from the outset and can't be meaningfully piloted with temporary materials.
1Signal-to-roundabout conversion
2Median U-Turn (MUT) retrofit
3Restricted Crossing U-Turn (RCUT) retrofit
4