You're driving on an Oregon road that doesn't fit any of the standard categories: not residential, not business district, not interstate, not posted. What speed limit applies?
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A.
45 mph
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B.
65 mph
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C.
35 mph
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D.
55 mph Correct
The answer is "55 mph"
Oregon's catch-all default is 55 mph, listed in the manual as the limit 'On all roads and highways not meeting any other definition unless otherwise posted.' Most rural state highways and unposted secondary roads fall under it. The pull toward B comes from a figure tied to rural interstates, where limits vary by posting, mistaken here for the default on any road that fits no other category.
The traps in the wrong answers
A. 45 mph
45 mph is not the catch-all default for an unclassified road; 55 mph is. This answer invents a mid-range tier between the listed defaults of 15, 20, 25, and 55 mph.
B. 65 mph
65 mph is the typical default for rural interstates, not for general roads. It also requires posting. This answer confuses interstate posted maximums with the catch-all default; the manual notes interstate limits vary and posts the 55 mph default for all other roads.
C. 35 mph
35 mph is not one of the default categories the manual lists for a road that meets no other definition. This answer treats a common posted speed as if it were a statutory default.
This question tests your knowledge of Speed Limits in Oregon. Source: Oregon Driver Manual, "Speed Regulations - Speed Limits," p.19..
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