Trends
3.74
SNDi (2020)1,200 km
Total street network1975–2020
Analysis periodDisconnectedness burden of street construction in Parwan
▸ Hover over bars to see values
The chart above shows, for each construction period in the Parwan region, the SNDi of new street additions (bar height) and the volume added (bar width), so that bar area reflects the total disconnectedness burden of that period's construction. The 1976-1990 period contributed the greatest disconnectedness burden, with 410 km of street added at an SNDi of 4.45. Overall, the SNDi of new street additions in the region fell steadily.
How have Parwan's street networks changed over time?
Most recent snapshot
Taking into account the entire (i.e. aggregate) street network in Parwan as of 2020, the overall level of street-network sprawl is 3.74, which is relatively sprawly.
Trends in street network construction
The SNDis of street construction for the respective time periods are 5.43, 4.45, 3.8 and 2.87. In each period, new street development in Parwan steadily grows more connected than in the last.
Quantity of street network construction
The street network in Parwan spans a total of 1,200 kilometers. The period with the greatest volume of street construction was 2006-2020. These roads have an SNDi of 2.87, which is moderately connected.
Effect on the aggregate network
New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 5.43, 4.82, 4.55 and 3.74. Overall, the SNDi of the aggregate street network has fallen: the street network in Parwan has become more connected. This decrease has quickened: between 1975 and 1976-1990, SNDi fell by 0.61 points, but between 1991-2005 and 2006-2020, it fell by just 0.81.