29．On a foggy Monday morning in May 2016，Amsterdam officials，engineers and civil servants gathered nervously at Alexanderplein --- a busy crossroads near the city centre with three streetcar lines --- where many people were walking，driving，and，as in any Dutch city，riding bicycles.All of a sudden，the traffic controls were shut off for all transport modes，in all directions.
This live pilot project is part of a larger mobility strategy across the city to make more room for cyclists and pedestrians.That means limiting access and space for private vehicles. "Amsterdam's public space is limited，" says the vice mayor for traffic，Pieter Litjens，who finally approved the pilot. "We need to be thoughtful and strategic about who and what uses that space."
In the weeks before the lights were shut off，200 cyclists were interviewed in the morning and evening.A majority of them disliked the crossroads and made complaints.When asked whether the traffic lights were necessary，about a third said "absolutely yes，" only 5% said absolutely not，and the majority was uncertain.It was clearly a question they had never thought about.
When the lights were turned off，about 150 cyclists were interviewed.We found that not only did fewer people dislike this crossroads，but about 60% said the traffic situation had improved.
All interviewees spoke more about human interaction. "People pay more attention，" said one man. "It's amazing that it regulates itself，" said a young woman. "It's a bit scary，but you never have to stop and nobody is grumpy，" said a teenager.But no one could really further explain why or how.
Behaviour was noticeably different.Most cyclists slowed down as they approached the crossroads，and communicated to other cyclists and motorists using eyes，gestures，expressions and voices.In one incident，a mother carrying her child on a front seat slowly entered the crossroads.When she was halfway across，a car approached from the right.Traffic signs indicate priority for the car driver，but instead，the mother made eye contact with the driver，both smiled，and the car driver
yielded.
（1）Why was the pilot project carried out in Amsterdam？（no more than 10 words）
（2）What did most cyclists who were interviewed think of the pilot project？（no more than 12 words）
（3）What does the underlined word "yielded" （the last paragraph） probably mean？（no more than 2 word）
（4）Why does the writer mention the mother and the driver in the last paragraph？（no more than 8 words）
（5）Do you think the traffic lights can be turned off in Tianjin？Please give your reason.（no more than 20 words）
