Perpignan in context: Street-network sprawl trends

Perpignan in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
PerpignanOccitanie (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Perpignan plotted against Occitanie and France. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Perpignan's incremental SNDi fell from 3.39 to 2.81 between 1991-2005 and 2006-2020. In terms of the aggregate network, Perpignan ranked 1st out of 5 cities in Occitanie and 13th out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
2.81
Rank in France
22nd of 73
Rank in Occitanie
3rd of 5

Entire Network (Aggregate)

SNDi value
2.19
Rank in France
13th of 73
Rank in Occitanie
1st of 5

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
PerpignanEjigboKengtung

In new street additions, Perpignan built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Ejigbo fluctuated in its street-construction patterns and Kengtung built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Perpignan and Ejigbo both became progressively more disconnected, while Kengtung grew more disconnected from 1975 through 1976-1990, then improved. Notably, Perpignan had a more sprawly network than Ejigbo in 1975 but the two have since reversed their relative ranking.