Cambridge ielts 1-15 series reading answers explained

7. Answer: safety
Key words: Guard rails, improve, pedestrians, movement, not disrupted
In paragraph E, the guard rails are described as “an engineering solution to pedestrian safety …”; 
“pedestrian safety” could be rephrased as “the safety of pedestrians”. Therefore, “safety” is the answer 
for gap 7. 
Moreover, the guard rails were based on models that “prioritise the smooth flow of traffic”, where the 
“smooth flow” could be understood as “movement” that is “not disrupted”, meaning that it also 
ensures the undisrupted movement of traffic. Thus, “traffic” should be filled in gap 8 
movement = flow 
Answer: safety – traffic. 
8. Answer: traffic
Key words: Guard rails, improve, pedestrians, movement, not disrupted
In paragraph E, the guard rails are described as “an engineering solution to pedestrian safety …”; 
“pedestrian safety” could be rephrased as “the safety of pedestrians”. Therefore, “safety” is the answer 
for gap 7. 

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Moreover, the guard rails were based on models that “prioritise the smooth flow of traffic”, where the 
“smooth flow” could be understood as “movement” that is “not disrupted”, meaning that it also 
ensures the undisrupted movement of traffic. Thus, “traffic” should be filled in gap 8 
movement = flow 
Answer: safety – traffic. 
9. Answer: carriageway
Key words: access points, one at a time
Paragraph E states that access points are used to divide the crossing into two, and there is one of these 
access points, “one for each carriageway”, in order to encourage pedestrians to slow down by crossing 
each one at a time. As a result, what pedestrians are encouraged to cross one” at a time”, here, is the 
carriageway. Therefore, “carriageway” is filled in the gap.