Double Arrow Sign
The double-headed arrow sign (M6-4), shown in Figure 3-10,
is to be used in directional assemblies at intersections when all of the following conditions are met
:- Intersection is rural,
- Both roadways are two-lane conventional type,
- Intersection is simple, basically 90 degree crossing or tee,
- Highway directions are reasonably obvious with individual cardinal direction markers, and
- Minor road has mostly local traffic.
Figure 3-11 illustrates the application of a double-headed arrow under these circumstances.
Figure 3-11. Use of Double-Headed Arrow in Directional Assembly