A pedestrian detour is 100 feet long with cones every 20 feet, including both ends. How many cones are needed?
Correct Answer
A) 6 cones.
One hundred feet divided by 20 feet creates 5 spaces; including both ends requires 6 cones.
Why This Is the Correct Answer
One hundred feet divided by 20 feet creates 5 spaces; including both ends requires 6 cones.
Why the Other Options Are Wrong
Option B: 5 cones total.
5 cones total. is below the supported result for traffic control calculation; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 7 cones total.
7 cones total. is above the supported result for traffic control calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 8 cones total.
8 cones total. is above the supported result for traffic control calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Measure to feet, adjust for divided, then let Setting Sidewalk set the finish line.
Reference Hint
Study anchor (closed-book): memorize Traffic control calculation from Cal/OSHA Title 8 Construction Safety Orders; CSLB B General Building. / Cal/OSHA Title 8 pedestrian and traffic control concepts; know the rule or calculation trigger without relying on exam-room lookup.
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