Skip to main content

Table 5 Model validation results

From: Speed prediction models for car and sports utility vehicle at locations along four-lane median divided horizontal curves

Location R = 165 m, Lc = 100 m R = 280 m, Lc = 275 m R = 360 m, Lc = 365 m
AS (km/h) PS (km/h) E (%) AS (km/h) PS (km/h) E (%) AS (km/h) PS (km/h) E (%)
PC50 84 87 3.6 86 93 8.1 100 96 4.0
PC 83 84 1.2 83 88 6.0 103 97 5.8
MC 85 78 8.2 85 85 0.0 99 99 0.0
PT 81 85 4.9 88 85 3.4 102 98 3.9
PT50 86 84 2.3 90 90 0.0 104 102 1.9
  1. AS Actual 85th percentile speed observed at the validation site; PS predicted speed rounded to the nearest integer; E error