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Horizontal Curve Safety


Quiz Questions

1. The centerline pavement marking is the ________ treatment to apply to a curve section, assuming the road is paved and has sufficient width and volume.
Maximum
Minimum
2. The most common standard width for each stripe of a centerline stripe is:
One inch
Two inch
Three inch
Four inch
3. A New York study found that standard edge lines on curvy two-lane roads reduced total crashes by:
3%
5%
10%
15%
4. Not all horizontal curves require a Horizontal Alignment sign.
True
False
5. Traffic signs of all types use _____________ sheeting to ensure they are visible to drivers at night or in periods of low light.
Retroreflective
Reflective
Magnetic
None of the above
6. A 1968 evaluation of curve warning signs reported that installing warning signs can reduce crashes by:
5%
10%
18%
25%
7. The One-Direction Large Arrow sign is used to define a change in what alignment?
Horizontal
Vertical
8. Spacing should allow the motorist to view at least _____ signs until the change in alignment eliminates the need for the signs.
One
Two
Three
Five
9. Horizontal Curve Safety
The picture above is:
Post delineators installed on a ramp
Vertical Signs
Two way signs
None of the above
10. "Doubling-up" simply refers to situations where agencies install a second, identical sign on the _________ side of the roadway
Left
Right
11. One factor limiting the use of flashing beacons is the availability of an accessible power source
True
False
12. Space reflective sheeting panels 18 to 36 in apart, running ____________ to traffic.
Parallel
Perpendicular
13. A rumble strip can be formed in the pavement surface by placing either grooves into the surface or strips of material ____________ the surface according to a prescribed spacing pattern.
Below
Above
14. The installation cost depends on the:
Length of section
Pavement type and pattern
Highway location
All of the above
15. The vertical height difference between the paved surface and the unpaved shoulder is the pavement shoulder drop-off. Drop-offs happen when the unstabilized pavement edges ___________ , which creates the height difference.
Are collided
Erode
Are not aesthetically pleasant
None of the above
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