Synthesis of Safety for Traffic Operations - Transports Canada

Bicycle Safety
TABLE 7.1: Safety Impacts of Advance Stop Lines in the United Kingdom
Measure Period
Site
1 2 3
Duration Before 5.6 5.6 6.8
(years) After 6.4 3.4 2.2
Total Crashes
Before 9 16 23
After 5 1 4
Total Cyclist Before 4 4 2
Crashes After 4 0 1
Total Crashes Before 0 12 15
on treated
approach(s)
After 3 0 2
Total Cyclist
crashes on
treated
approach(s)
Before
After
0
3
4
0
0
1
The overall number of crashes is too low to draw any statistically significant conclusions.
Furthermore, any effect that may, or may not, have been caused by the advance stop line
has been confounded by additional treatments applied to the subject intersections. It is
noted by the author that at one intersection the signal phasing was modified five months
prior to the installation of the advance stop line, at another the advance stop lines were
installed in conjunction with intersection signalization, and at the final site a turn
prohibition was implemented shortly before being treated with the advance stop line.
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