Which shape is generally used for guide signs in Texas?
-
A.
Vertical rectangle
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B.
Horizontal rectangle Correct
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C.
Pentagon
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D.
Equilateral triangle
The answer is "Horizontal rectangle"
Horizontal rectangle is the shape generally used for guide signs, per Table 17 in the manual. Vertical rectangle is the trap: drivers who recall that a rectangle appears twice on the shape chart, then reach for the taller, portrait orientation, land on the regulatory shape instead.
The traps in the wrong answers
A. Vertical rectangle
Vertical rectangle is the general regulatory-sign shape, while horizontal rectangle is generally for guide signs. This answer confuses the two rectangle entries by orientation, picking the taller portrait shape though guide signs use the wider one.
C. Pentagon
Pentagon is reserved for school advance and school crossing signs, not guide signs. This answer stretches the school-zone pentagon to any sign that identifies a route or destination, treating five sides as a general guide cue.
D. Equilateral triangle
Equilateral triangle is exclusively the yield-sign shape, not the guide-sign shape. This answer applies the yield triangle to any sign that gives drivers direction, ignoring that the manual assigns the triangle to yields alone.
This question tests your knowledge of Guide Signs in Texas. Source: Texas Driver Manual, "Table 17: Signs by Shape," p.26..
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