대광고 고1 · 시험 후 첫 근거 전이 5문항

A city tested a new traffic signal system at six intersections. Average travel time fell during the first month, but the engineers did not treat the decline as proof that the system alone caused the improvement. A bridge repair had ended just before the test, and several offices had introduced flexible work hours. The team therefore compared morning and evening patterns and examined two nearby intersections that still used the old system. Travel time fell most sharply at the test intersections during the evening, when office schedules had changed less. This pattern supported a possible effect of the signals, yet it did not remove every alternative explanation. Rainfall was unusually low, and the number of delivery vehicles had also decreased. The report concluded that the system deserved a longer trial, not that it had solved congestion. It recommended keeping the comparison intersections, recording weather and vehicle types, and checking whether the effect remained after normal traffic returned.

A city tested a new traffic signal system at six intersections. Average travel time fell during the first month, but the engineers did not treat the decline as proof that the system alone caused the improvement. A bridge repair had ended just before the test, and several offices had introduced flexible work hours. The team therefore compared morning and evening patterns and examined two nearby intersections that still used the old system. Travel time fell most sharply at the test intersections during the evening, when office schedules had changed less. This pattern supported a possible effect of the signals, yet it did not remove every alternative explanation. Rainfall was unusually low, and the number of delivery vehicles had also decreased. The report concluded that the system deserved a longer trial, not that it had solved congestion. It recommended keeping the comparison intersections, recording weather and vehicle types, and checking whether the effect remained after normal traffic returned.

A city tested a new traffic signal system at six intersections. Average travel time fell during the first month, but the engineers did not treat the decline as proof that the system alone caused the improvement. A bridge repair had ended just before the test, and several offices had introduced flexible work hours. The team therefore compared morning and evening patterns and examined two nearby intersections that still used the old system. Travel time fell most sharply at the test intersections during the evening, when office schedules had changed less. This pattern supported a possible effect of the signals, yet it did not remove every alternative explanation. Rainfall was unusually low, and the number of delivery vehicles had also decreased. The report concluded that the system deserved a longer trial, not that it had solved congestion. It recommended keeping the comparison intersections, recording weather and vehicle types, and checking whether the effect remained after normal traffic returned.

A city tested a new traffic signal system at six intersections. Average travel time fell during the first month, but the engineers did not treat the decline as proof that the system alone caused the improvement. A bridge repair had ended just before the test, and several offices had introduced flexible work hours. The team therefore compared morning and evening patterns and examined two nearby intersections that still used the old system. Travel time fell most sharply at the test intersections during the evening, when office schedules had changed less. This pattern supported a possible effect of the signals, yet it did not remove every alternative explanation. Rainfall was unusually low, and the number of delivery vehicles had also decreased. The report concluded that the system deserved a longer trial, not that it had solved congestion. It recommended keeping the comparison intersections, recording weather and vehicle types, and checking whether the effect remained after normal traffic returned.

A city tested a new traffic signal system at six intersections. Average travel time fell during the first month, but the engineers did not treat the decline as proof that the system alone caused the improvement. A bridge repair had ended just before the test, and several offices had introduced flexible work hours. The team therefore compared morning and evening patterns and examined two nearby intersections that still used the old system. Travel time fell most sharply at the test intersections during the evening, when office schedules had changed less. This pattern supported a possible effect of the signals, yet it did not remove every alternative explanation. Rainfall was unusually low, and the number of delivery vehicles had also decreased. The report concluded that the system deserved a longer trial, not that it had solved congestion. It recommended keeping the comparison intersections, recording weather and vehicle types, and checking whether the effect remained after normal traffic returned.