16 SS15 Bortigiadas-Aggius-Viddalba 2

A quick review of the stage, detailing the overall route, the route in 1km sections, route elevation profile and route curvature profile.

16.1 Stage Route Preview

Static map, significant corners highlighted:

16.2 Segmented Route

1km route sections, aligned to read left to right; significant corners highlighted.

16.3 Speed Estimates

Estimates of speed along the route according to a very simple acceleration model.

Kilometer section speeds (kmtime is time in seconds to complete that segment; avspeed is in km/h):

kmsection section_length km_time av_speed maxspeed
1 0.99 30.48868 116.89583 145.0000
2 1.00 31.12753 115.65323 144.9316
3 1.00 36.20257 99.44046 144.9991
4 1.00 39.48132 91.18236 145.0000
5 1.00 31.73899 113.42516 145.0000
6 1.00 33.59318 107.16460 145.0000
7 1.00 34.24914 105.11211 144.9970
8 1.00 35.78664 100.59620 145.0000
9 1.00 36.37736 98.96265 144.9316
10 1.00 26.67305 134.96771 145.0000
11 1.00 25.58515 140.70660 145.0000
12 1.00 28.45272 126.52569 145.0000
13 1.00 33.52832 107.37192 145.0000
14 1.00 35.17528 102.34461 145.0000
15 0.60 21.86974 98.76660 145.0000

Anticipated stage time: 8m 0.3s

Speed profile chart: this chart shows the anticipated speed over distance into route on a per kilometer basis (the green area is flat out, the pink is the sort of slow you see at a hairpin):

16.4 Elevation and Convexity Index into Route

Elevation and significant curvature vs distance into stage:

(Note that this uses a different curvature measure to the route plots; specifically, the curvature measure used here is the convexity index.)

Elevation delta signature — order the severity of height changes over each 10m section of the stage:

Split section elevation profiles can be found in the stage km section summary table.

16.4.1 Left and Right

How does the stage vary in terms of left and right turns?

Order the severity of right and left turns over each 10m section of the stage:

Kilometer segment convexity index signatures can be found in steg stage km section summary table.

Table 16.1: Five longest straights (m)
Distance into stage (km) Straight length (m)
11.02 80
9.25 80
7.37 80
5.30 90
0.60 120

16.4.2 Sinuosity and Straightness

Sinuosity and straightness are technical measures with specific defintions. They may or may not be that useful for route analysis in their current form. The intention is to try to find ways of identifying variously “interesting” kilometer stretches.

(#tab:sinuosity_table-16)Stage segmented into 1km sections: SS15 Bortigiadas-Aggius-Viddalba 2
km sinuosity straightness route elevationPlot convexityProfile
1 0.03530246 0.8744865
2 0.04771308 0.7807025
3 0.06010296 0.9138153
4 0.06782408 0.7155778
5 0.05003200 0.8299424
6 0.05331044 0.7054120
7 0.04692366 0.8327750
8 0.05829474 0.8805674
9 0.06088317 0.7243553
10 0.02699571 0.9625847
11 0.02032031 0.9590434
12 0.03275863 0.6672506
13 0.05326643 0.6468652
14 0.05563206 0.4168831
15 0.06909553 0.7358419