Warning traffic devices

Prior to traffic restrictions or unexpected changes to the traffic situation are used to early warning of road users, included are:

Warning light

intermittent yellow or orange light
draws attention to the need for caution
emphasizes the importance of road signs or transport equipment
the attribute requirements are modified according to STN EN 12352

Warning lights types

VS1

Surface area (cm2): ≥250
Intensity of light (cd): 1500
Average (mm): 180
Class according to: L8H

VS2

Surface area (cm2): ≥250
Intensity of light (cd): 500
Average (mm): 180
Class according to: L8H
Surface area (cm2): ≥18
Intensity of light (cd): 25
Average (mm): -
Class according to: L2L

VS3

Surface area (cm2): ≥2x250
Intensity of light (cd): 10
Average (mm): 180
Class according to: L6
Surface area (cm2): ≥250
Intensity of light (cd): 25
Average (mm): 180
Class according to: L8G

VS1

Surface area (cm2): ≥700
Intensity of light (cd): 20000
Average (mm): 300
Class according to: L9H

Use of individual types of warning lights VS1-VS4:

VS1 - transverse shutters, light guide boards, moving shutters, light darts, light guide boards, and below.,
VS2 - longitudinal closures,
VS3 - closures on roads designed exclusively for pedestrians and cyclists,
VS4 - Upper warning lights for the mobile shutter and pre-warning devices.

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