20 SS19 Arzachena-Braniatogghiu 2

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

20.1 Stage Route Preview

Static map, significant corners highlighted:

20.2 Segmented Route

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

20.3 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 30.009444 118.76261 145.0000
2 1.00 29.678010 121.30193 144.9999
3 1.00 37.789176 95.26538 144.7656
4 1.00 41.991521 85.73159 144.9561
5 1.00 31.184996 115.44013 145.0000
6 1.00 25.107198 143.38517 145.0000
7 1.00 25.233010 142.67025 145.0000
8 1.00 25.415428 141.64625 145.0000
9 1.00 25.500838 141.17183 145.0000
10 1.00 26.479530 135.95407 145.0000
11 1.00 26.739382 134.63288 145.0000
12 1.00 35.733399 100.74608 145.0000
13 1.00 31.827515 113.10968 144.9992
14 1.00 29.348212 122.66505 145.0000
15 1.00 25.620112 140.51461 145.0000
16 0.21 5.928081 127.52862 145.0000

Anticipated stage time: 7m 33.6s

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):

20.4 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.

20.4.1 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 20.1: Five longest straights (m)
Distance into stage (km) Straight length (m)
8.21 360
5.90 200
5.66 190
4.90 260
0.24 160

20.4.2 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-20)Stage segmented into 1km sections: SS19 Arzachena-Braniatogghiu 2
km sinuosity straightness route elevationPlot convexityProfile
1 0.04179928 0.7781024
2 0.03427055 0.8790581
3 0.05421193 0.7998123
4 0.07955705 0.5355396
5 0.04429056 0.8452120
6 0.02068658 0.9485102
7 0.02281379 0.9565935
8 0.01857295 0.9026010
9 0.01418742 0.9385125
10 0.01729594 0.9424705
11 0.02805216 0.9303206
12 0.05874758 0.6412238
13 0.04066254 0.9462914
14 0.03900415 0.9595136
15 0.01453197 0.9808741
16 0.02206366 0.9931725