huge race between. the tallest biggest and the most beautiful structures. this is how massive churches were created. with the drills starts april 12th on d. w. . if you live in the countryside surely familiar with the smell of fresh air the sight of a clear blue sky and the feel of why 80 in space it's simply gorgeous and that may make you wonder why anyone would choose to move to a city but the fact is free quarters of the world's population now live in towns

and cities that is over 5000000000 people and as these areas grows so do the problems from traffic congestion to soaring energy demands what we need. visions our topic today are made to welcome now did you know that one in 8 people not only live in a city but in a mega city sharing limited space with millions of other inhabitants and now imagine those millions on their way to work not sure if the term rush hour still applies in order to ensure people can actually move from one part of a city to another new mobility concepts are needed and sooner rather than later. mushrooming megacities are a global phenomenon there are now 3 times as many urban areas with $10000000.00 plus residents as just a few decades ago. but as cities grow so do their problems.

in cities or microcosms of society who can observe all the opportunities and challenges in a very small space like under a looking glass and glass. the biggest conurbation on the planet is greater tokyo population 38000000 followed by jakarta with around 34000000 delhi mumbai manila and shanghai each home to more than 20000000 people as are the biggest metropolises in latin america sao paulo and mexico city. traffic is a major problem in megacities but there are new ideas out there on how to tackle it . we're also used to cars that we can't imagine cities without them anymore but if we were to experience that we wouldn't want to go back to cars at an obstacle and. this is how cities might look in future if different kinds of road users were

separated one road is for fast moving aleck trickery eccles another for pedestrians cyclists and scooters with the 3rd a promise not reserved for pedestrians only. welcome to the woven city a project under development by japanese carmaker toyota a prototype city and living laboratory for cutting edge technologies. here all vehicles will be self driving and run on electric power or hydrogen the mini city itself will be powered by solar and geothermal energy with everything coordinated centrally by ai technology. it's been designed for a pop. elation of 2000. people abi kluger look we need it smarter ideas about how people can move around. in a city with 5000000 residents and 3000000 cars that are idle 90 percent of the time you just need to do the math. so that we could probably reduce the number of cars

by 80 percent. going with a smart sharing system people could still enjoy the same level of mobility and sort of mention. meanwhile at the other end of asia in saudi arabia there are plans for a new megalopolis neon a linear city comprising 4 been hubs the pet project of the saudi crown prince is said to cost an estimated 500000000000 euros road and high speed rail transportation are all electrical and underground. neon nicknamed the line because it's meant to be 170 kilometers in length is designed to be carbon neutral with a 5 g. network driving all manner of applications. right now it's a thinly populated and undeveloped area. we want to create sustainable infrastructures and stimulate economic activity. which will in turn create new kinds of jobs and

economic development in saudi arabia. the country is seeking alternatives to its oil based economy niang should also goose tourism and attract startups and media production companies the entire city's energy requirements are to be supplied from renewable sources. have a huge amount of sunlight and ideal wind conditions so our energy system will run exclusively on primary energy. grids energy will then also be used for desalination . because water is a big problem here. it's an acronym for a new future the plan is to create a city for 1000000 people in just 10 years but is that really feasible. let's combine them if the 2 projects have something in common it's that they're not

what was originally hoped for blueprints and reality are miles apart the projects assume a managerial perspective which ignores the fact that cities are more than just infrastructure what draws people to living there is not something you can plan just like that plan. no one city and me arm 2 visions of eco friendly high tech cities where people can actually enjoy life but will they actually get off the ground. well all i know is that compared to cities like tokyo or mexico city but then it's a village and it does have lots of parks and green spaces like tree lined all of us other streets are getting busier traffic is getting worse it's not just cost delivery vans and buses and of course more people are riding bicycles and there's often not enough room for everyone thinks must change and that's why city planners

are joining forces with start ups to come up with new and sustainable concepts. the city streets of berlin are increasingly busy with cars cyclists but. all this gets around by bike. relief tonight. and i don't want to live in a noisy polluted concrete jungle but i want to live in a city where people chatting on the pavements have been don't have to shout at one another over the roar of porches was a gas to puerto. fix my palin was set up a year ago for the city cycling community its allows users to see for example where there's a new cycle past or where a new one is planned it already has over 1500 users the idea is to put pressure on

them planning authority if. the said planning a new bicycle boulevard or new bike racks the public can say whether they approve of the plans. so you can see what's possible what the public sees as a priority and what it sees as less urgent where there is less demand. balance population increases by about 20000 a year according to forecasts the city will be home to some 4000000 people by 2030 . how can traffic be reduced. how can traffic flow be diverted to reduce congestion and pollution these are questions that a group of scientists are seeking to answer with the help of data collected by traffic cameras. let's take a busy bustling street as an example

a street you think would be quite dangerous for cyclists. i would look at that you check terry's see if they often need to overtake trucks and buses say and see if that could be quite high risk of competency. their findings could be used by urban planners to redesign busy cross roads for example. traffic patterns are constantly in flux recent months have seen a 25 percent rise in cyclists on poland's streets. when the pandemic hit the city created a number of pop up cycle paths. but the fix my team says there's still a lot of work to be done. compared to other cities the mayor and the city government aren't very invested in cycling policy. in paris and london it's a political priority that's at the. heart for kara thrace after her career and. not

yet but the vision reason city a working hard to get to speed. the green with pop up a bicycle past is going in the right direction but the future of mobility will still include costs and while many consider any cars oil electric cars a sustainable alternative to gasoline and diesel power transportation it's not that straightforward is a look at some of the issues. electric cars like me are still quite a rare sight there is only 11 and a half 1000000 of us worldwide that's just a tiny fraction of the estimated $1400000000.00 cars in total but our numbers are growing in the cars use raw materials mined in south america the democratic republic of congo and china these include lithium cobalt and rare earths needed in

our batteries it minutely extracting and transporting these materials is an environmental nightmare often carried out under inhumane conditions. their reserves are abundant studies show that worldwide deposits of these materials could meet demand for years to come. one good thing about us e-cards is that we don't emit greenhouse gases although manufacturing certainly does all my components still have to be produced but my power train only has $200.00 parts as opposed to a combustion engines $1400.00 where my electricity comes from is another huge issue renewable sources or fossil fuels the good news is that the share of green energy is growing which definitely plays in my favor as battery technology improves the range of e-commerce is increasing. right now it's rarely more than 500 kilometers

and often way less finding a tracking station can also be an issue. as to our batteries 95 percent of them could be recycled in an environmentally friendly way but it's still not economically viable. but i recommend you sit back and relax it's surely only a matter of time today electric cars cost more than conventional models but that gap is closing the day of climate friendly affordable electric cars maybe about to dawn. so whether electric gas or diesel far too often cars end up stuck in traffic jumps but why because there are simply too many cars on the roads to be can look to mother nature to find a perfect example of how to keep traffic running smoothly and i'm talking about.

now when it comes to regulating traffic they seem to have it figured out there are no jobs on their motorways. bad traffic bad vives. anti ways are also super busy but clearly run a lot more smoothly. in the human world which congestion on the roads is a normal part of life we even keep track of record breaking jams. when hurricanes rita hits the southern united states in september 2005. 2 and a half 1000000 people fled houston or tries to the resulting tailback on interstate $45.00 heading inland towards dallas reached a length of 160 kilometers for 48 hours. in the run up to the 2014 world cup in brazil the roads in and around sell paolo gridlocked 340 kilometers of

stationary traffic almost equivalent to the distance from sao paulo to rio moscow november 2012 the notorious russian winter paralyzed much of the biggest country on the planet for 3 days and 3 nights snowstorms plus the highway between st petersburg and the capital. but how do traffic jams actually come about. the main reason is that you do not have enough capacity. of course they are the reason these reasons reasons are not that they do not happen that often. dumb people sometimes make driving mistakes of course and for instance a bit not paying enough attention and then they have to brake hard. words. there is a very well they learned. that 60 percent or 70 percent. is

. doing this in. syria. yes there is no orders to get it if you're going to get it. but the hand world runs differently. when i'm as a salesman than to the principle is one for all and all for one hardly applies to motorists on the road everyone's thinking what's the quickest way of getting to my destination individuals focus on themselves and don't care about the others. drivers have a lot to learn from hands. off and when the time function i'm. driving this growth. or your call to say they're missing parents there is a thing which you hear in yours.