Could you imagine being in a car driven by a computer, not a human? Recently, China has made a big step toward self-driving cars.

Since August, driverless taxis can run on roads in Wuhan, Chongqing and Shenzhen. Self-driving cars bring us many benefits. They use computers to sense the things around them and make better use of space. This means fewer traffic jams and better parking of cars. For disabled or blind people, self-driving cars can also help them get around more easily.

According to US Centers for Disease Control and Prevention, more than 1.35 million people are killed on roads around the world every year. Many more are injured. Self-driving cars could reduce road accidents by 90 percent and save governments a lot of money, said the website TechDim. The main cause of car accidents is human mistakes. By using computers, self-driving cars don’t make poor decisions or lose attention like humans do.

But self-driving cars aren’t perfect. If something unexpected on the road happens, self-driving cars can’t react as fast as a human driver could. Also, during weather events like heavy snow, self-driving car s would struggle (费力) to see the lines on the road. It might lead to an accident. The car’s computer system could also get hacked (非法入侵) by someone, causing it to crash or change its destination (目的地).

It’s clear that there is a lot of work to do to make self-driving cars a common and safe sight on our roads.And China is taking the lead in making this happen.

4 . Copenhagen has GREAT public transport. It is reliable, safe, and easily accessible. Of course, like everything in Copenhagen, it is not cheap. The system can be a little confusing, even for locals, but we’re here to help simplify it all for you! And today our focus is Travelling with a Bike.

BIKES ON THE TRAIN

Bicycles can be taken on s-tog lines for free but you can’t take bikes through Nørreport station during peak hours. To take your bike on a train, you need to put it on the first or last carriage, clearly marked with large signs of bicycles on the outside.

To take a bike on a regional train, which takes you to parts of Denmark outside Copenhagen, you must buy an extra ticket. The price depends on the distance and varies from 16 kr to 28 kr.

BIKES ON THE METRO

Bicycles can be taken on the metro for an extra 13 kr. You need to pay for the bike with its own ticket. You can’t take your bike on the metro during peak hours.

BIKES ON THE BUS

You can bring a bike on a bus but each bus is limited to two bikes, even if there is much space. Generally, people do not travel with their bikes on buses in Copenhagen.

BIKES ON THE FERRY(渡轮)

Charges for bicycles depend on the company and the destination. You will need to check with the ferry companies. When you book the ticket, you must state that you have a cycle, even if it’s free of charge.

6 . After eight years of construction, the Padma Multipurpose Bridge in Bangladesh opened to the public on June 26, reducing travel time from parts of the southwest of the country to the capital Dhaka from seven to eight hours to as little as just 10 minutes.

The 21.5-meter-wide, 6.15-kilometer-long bridge built over the Padma River, the main branch of the Ganges, has two levels with the upper tier having a four-lane highway and the lower tier a single-track railway, according to Wuhan-based China Railway Major Bridge Engineering Group, or MBEC, one of China’s biggest bridge makers. Before that, travelers and goods were transported via boat or ship because of the vast width and fast-flowing nature of the river, and the tendency of the area to flood.

In 2014, the Bangladeshi government awarded MBEC a $1.54-billion contract to build the core structure of the bridge, making it the country’s largest infrastructure(基础建设) project as well as the largest foreign bridge project undertaken by Chinese companies in terms of total cost.

“The construction was much harder than expected as the complex geological conditions brought multiple challenges to us,” said Shen Tao, deputy general manager of the project. “The bridge is located above a river with banks on loose soil, and downpours in the rainy season often caused flooding, bringing us numerous difficulties we had never experienced before.” “During the construction, we had to adjust the design plan to adapt to environmental changes whenever necessary,” he added.

“However, through continuous learning and adaptation, construction teams have greatly improved their abilities including technology, communication and adaptability.” said Wen Wusong, chairman of MBEC. “They demonstrated the strength of China’s road bridge construction to the whole world and the bridge is a model of international cooperation.”

Over the past eight years, the project has created over 50,000 jobs for local residents, according to MBEC.

9 . We have learned to expect that trains will be punctual. After years of conditioning (习惯), most of us have developed an unshakable faith in railway timetables. Ships may be delayed by storms; flights may be cancelled because of bad weather; but trains must be on time. Only an exceptionally heavy snowfall might temporarily dislocate railway services. It is all too easy to blame the railway authorities when something does go wrong. The truth is that when mistakes occur, they are more likely to be ours than theirs.

After consulting my railway timetable, I noted with satisfaction that there was an express train to Westhaven. It went direct from my local station and the journey lasted a mere hour and seventeen minutes. When I boarded the train, I could not help noticing that a great many local people got on as well. At the time, this didn’t strike me as odd. I reflected that there must be a great many people besides myself who wished to take advantage of this excellent service. Neither was I surprised when the train stopped at Widley, a tiny station a few miles along the line. Even a mighty express train can be held up by signals. But when the train dawdled (慢吞吞地动) at station after station, I began to wonder. It suddenly dawned on me that this express was not roaring down the line at ninety miles an hour, but barely chugging (咔嚓咔嚓地响) along at thirty. One hour and seventeen minutes passed and we had not even covered half the distance. I asked a passenger if this was the Westhaven Express, but he had not even heard of it. I determined to lodge a complaint as soon as we arrived. Two hours later, I was talking angrily to the station master at Westhaven. When he denied the train’s existence, I borrowed his copy of the timetable. There was a note of triumph (胜利) in my voice when I told him that it was there in black and white. Glancing at it briefly, he told me to look again. A tiny asterisk (星号) conducted me to a footnote at the bottom of the page. It said: “This service has been suspended.”