Canterbury in context: Street-network sprawl trends

Canterbury in context

33.64.24.8<19751976–19901991–20052006–2020SNDi of street additions
33.64.24.8<19751976–19901991–20052006–2020SNDi of entire street network
CanterburyEngland (Region)United Kingdom (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Canterbury plotted against England and United Kingdom. The SNDi of new construction in Canterbury peaked in 1976-1990, compared to England which peaked in 1991-2005 and United Kingdom which peaked in 1991-2005. Most recently, Canterbury's incremental SNDi fell from 3.12 to 3.11 between 1991-2005 and 2006-2020. In terms of the aggregate network, Canterbury ranked 16th out of 124 cities in England and 19th out of 143 in United Kingdom as of 2020.

New Street Additions (2006–2020)

SNDi value
3.11
Rank in United Kingdom
17th of 143
Rank in England
14th of 124

Entire Network (Aggregate)

SNDi value
3.03
Rank in United Kingdom
19th of 143
Rank in England
16th of 124

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
CanterburyKyoloSugarland Run

In new street additions, Canterbury and Sugarland Run both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Kyolo fluctuated in its street-construction patterns. For the full network, Canterbury became progressively more disconnected, while Kyolo fluctuated in connectivity and Sugarland Run grew more disconnected from 1975 through 1976-1990, then improved. Notably, Canterbury had a more sprawly network than Kyolo in 1975 but the two have since reversed their relative ranking.