Research on the Prepositive Distance of Crosswalk Warning Markings for Unsignalized Road Section

Table 3

The experiment groups.

The groups of experiment

Design speeds (km/h)

The prepositive distance of the crosswalk warning markings (m)

20

30

40

50

60

70

80

90

100

110

120

Experiment 1

30

○

○

○

○

×

×

×

×

×

×

×

Experiment 2

40

○

○

○

○

○

○

○

○

×

×

×

Experiment 3

50

○

○

○

○

○

○

○

○

○

○

○

“○” represents the prepositive distance of the crosswalk warning markings set under the design speed in the experiment, while “×” are not.