There have been a number of important changes to city carrier delivery:
- Adoption of DPS
- Reduction in delivered volumes
- Introduction of FSS
- Restructuring of the carrier network
The Postal Service initiated a comprehensive study of city carrier street time activities and costs.
The aggregate impact of the study is a modest decline in overall volume variable costs. The average variability for city carrier costs falls slightly from 48.5 percent to 47.3 percent.
The update did lead to changes in attributable costs across products.
First-Class Mail street time costs fell, but Standard Mail and package street time costs rose.
These changes are entirely consistent with a decline in First-Class Mail relative to Standard Mail, and increases in both sequenced mail volume and package volume.