Section 4: Barrier ReflectorsAnchor: #i1004079
Barrier reflectors (BR) are retroreflective devices used to inform motorists of the presence of a guardrail, bridge rail, or concrete barrier adjacent to the roadway during nighttime conditions.Anchor: #i1004089
Barrier Reflector Design
Various types of barrier reflectors may be used to mark guardrail, bridge rail, or concrete barrier. Figure 8-13 indicates some of these devices.
Figure 8-13. Barrier ReflectorsAnchor: #i1004109
Barrier Reflector Application
Barrier reflectors are used on guardrail, bridge rail, or concrete barrier.
Continuous bi-directional (two-way) barrier reflectors or delineation should be provided along roadside barriers for two-way two-lane undivided roadways. For one-way and multi-lane roadways, barrier reflectors can be unidirectional (one-way).Anchor: #i1004139
Barrier Reflector Placement
- Anchor: #NPJIQGAK
- If used, barrier reflectors should be placed in one of the following locations: Anchor: #QTKGXHNX
- Barrier reflectors should be installed a minimum of 18 inches above the edge of the pavement surface. Consistent barrier reflector height along the barrier is desired.
Figure 8-14. Typical Barrier Reflector InstallationAnchor: #i1004179
Barrier Reflector Spacing
When used on straight sections of roadway, the spacing between barrier reflectors should be adjusted to ensure a minimum of three barrier reflectors are used, with a maximum spacing of 100 ft between any two barrier reflectors on guardrail or bridge rail. When barrier reflectors are used along a curved section, Table 8-3 or 8-4 should be used to determine the appropriate barrier reflector spacing up to a maximum of 100 ft. Figure 8-15 illustrates barrier reflector spacing.
Figure 8-15. Barrier Reflector Spacing