字幕列表 影片播放 列印英文字幕 yeah welcome to the series that takes you to the heart of america and reveal the inner workings of our country as you have never seen them before I'm you'll quan I've worked in many different fields from law to government to business I've even one the reality show survivor but in every part of my life I've been fascinated by the same things systems and networks we're going to go on quite a journey coast-to-coast across this sprawling land to discover the habits the rhythms and the secrets that you only notice when you step back and see the big picture interchanges oddly elegant in the next hour aerial photography and satellite tracking will reveal how America's transportation systems make us the most mobile people on earth we built the vast networks of roads rails and airwaves and an army of workers keep the wheels turning hey let's like the bus driver but it's getting harder and harder to keep all these systems running well i think the freeways will get so slow where a lot of people just decide it's not worth the grief many of them are aging designed at a time when America was far less crowded you have a disruption at one place and it ripples all the way across country it does have a ripple effect but even as he struggled to keep up every day our systems miraculously managed to get us where we need to go this is a story of 310 million Americans on the move this is America revealed yeah America revealed is made possible by the Corporation for Public Broadcasting and by contributions to your PBS station from viewers like you thank you monday morning just before dawn but this isn't the night sky this is America this is us each of these points of light represents 7,500 people they create brilliant constellations that span the continent from the faint glow of small towns to the blaze of cities like Chicago and New York to connect these dots we built four million miles of roads 200,000 miles of rails 5,000 airports the largest transportation network in history but keeping it all moving that's America's challenge in the 21st century and nowhere does that challenge loom larger than in New York City it's the perfect example of a powerful but aging transportation network that moves millions even while straining under their weight take the island of Manhattan 23 square miles home to 1.6 million people every weekday morning is population nearly doubles swelling with an army of commuters these people are essential to the life of the city getting all of them onto this tiny island in only a few hours is a daily adventure that teeters on the edge of chaos and it's about to begin at 630am I'm coming in on the red-eye from LA to JFK International Airport and I've got plenty of company reported the path of every plane landing in New York's three major airports in a 24-hour period a flight comes and goes every 24 seconds that's more than 3,500 flights a day I 7am thousands of yellow cabs are picking up their first fears of the day at the airports and heading for men hand this taxi is one in 50,000 vehicles that will leave its way through New York's necklace of bridges and tunnels in the next power just below these bridges more than a hundred thousand people are traveling to and from the island by boat these are the traces of those vessels darting around New York's rivers and harbor including one fleet which alone Carrie 65,000 commuters a day staten island ferry yeah as thousands descend on the island by here road and water even more arrive by rail long island railroad trains carry suburban commuters into Manhattan every two to four minutes along with pack trains from New Jersey and amtrak trains they all converge at America's busiest commuter hub New York's penn station while only a few blocks away trains from the north stream into another bustling train station grand central terminal but getting people on to Manhattan is just half the battle now they have to deal with this the streets run yellow with taxis competing with thousands of trucks and cars and bus routes crisscross the island adding another layer to the traffic I'm not surprised the word gridlock originated here it's ATM and it looks like nobody's going anywhere but beneath the streets it's a different story i'm talking about the subway every day this system carries over 5 million passengers citywide without it traffic would overwhelm Manhattan streets and the city couldn't function but the subway has had an even bigger impact than that starting in the early nineteen hundreds when the first track was laid to build a transportation system in America whole cities and towns will spring up around it the subway system is a prime example it determined how New York City took shape and dictate the patterns of its inhabitants lives look beneath this forest of midtown Manhattan skyscrapers multiple subway lines converge here funneling in hard-working commuters from the city's outer boroughs like Queens this is a snapshot of what Queens look like in 1917 when subway construction was just getting started and here is what it looks like today a busy vibrant borough the subway made Queens possible but how 100 years ago to combat overcrowding and lower Manhattan tenements New York expanded its fledgling subway system to the sparsely populated outer boroughs critics call them the tracks to nowhere but New Yorkers soon got onboard lured by the promise of open land just a short ride from their jobs by the nineteen-twenties these lines were carrying more passengers than they could handle the city plan to add over 100 miles of new track but first the Depression hit then World War two yeah today we're stuck with the same basic wheels that were out of date in the nineteen thirties and the number of passengers keeps going up with every passing decade it's a pattern will see all over the country enormous but aging system was working hard harder to keep up with the growth to help create it's ten a.m. in the morning commute is winding down the city has survived another rush hour and millions have made it to their destinations New York's public transit system may be old and crowded but without it this teeming metropolis would come to a screeching halt the same is true across the country are public transportation systems are what keep the nation moving there's one system that carries a whopping 26 million Americans every day more than any other form of public transport there it is there it is again the humble school bus what's up guys good morning and come to kingman arizona to meet a guy who keeps one of these yellow Marvel's moving here rush hour is just beginning for many students in this desert community buses are the only way to get to school around the country kids rely on a half-million member army of transportation experts the nations school bus drivers here let's make the bus driver when these kids are on the bus they're my kids and I'll mess and I don't take that lightly you have to be the mother the father the mediator the nurse the cool uncle like how many miles you drive every day on average all do about a hundred sixty-five miles a day and that's a few that's just me this is mike's bus it's just one of kingdoms 53 buses replanted gps devices on them and found that they drive one-and-a-half million miles every year to every corner of the school district an area the size of Delaware that's repeated nationwide in thousands of school districts large and small tho system quite like this anywhere in the world here in the US if you can't get there on foot you can get a ride to your local school even if it's not that local so you guys are really kind of like the lifeblood of the system right i mean without you these kids wouldn't even be able to get an education no they wouldn't be able to get the school now we keep pumping the kids in so they can get educated our school buses worked amazingly well which is good considering how much we rely on them but there are other transportation networks out there that face big challenges including the system that first connected the country from coast to coast and made modern America possible the railroads to create a nation wide web of tracks the federal government launched one of the most ambitious and expensive infrastructure projects in human history and for nearly a hundred year's America's railways were the fastest and most popular way to travel but not anymore to get a glimpse of what keeps our trains going and what slows them down I've come to the rail hub of the United States Chicago more trains pass through this city than any other because in the eighteen hundreds Chicago's politicians lobby to make sure all national rail lines and here that created jobs but also logistical nightmares today there are three different systems here with different needs all fighting for space on one set of tracks commuter trains making local pickups amtrak trains traveling longer distances with fewer stops but those two passenger networks are dominated by the biggest slowest network of all yeah free our economy depends on goods carried by rail from coast to coast we have the world's most efficient and profitable trade system moving nearly ten times as much as $MONEY euro it's so successful that free companies owned most of America's tracks and many of our freight trains pass through one small section of Chicago's freight yards 27 miles of track behind me will move about 1.75 million free cars each year but this phenomenal success has come at a price the system isn't nearly as good at moving something else people so what is it about the freight system that gets in our way this is Jack strength is using a remote control to push that train of a man-made he'll be call the double hump shipping companies built this hill so that men like Jack can process all the free coming through this yard and reassemble cars according to destination the network we depend on to ship our goods depends on Jack his remote control and a surprisingly simple process known as pumping pumping is exactly a slang word for classifying the cars sorting kind of like a postal facility but instead of sorting mail your starting these kinds of time freight cars exactly after Jack pushes the cars up the hill area called she separates them by hand a century old technique called pin pulling this bar up her give me a signal so they want to make the cut and then jackets gravity drag each car down the other side of the hump to its outbound track these cars carry chemicals bound for Virginia lumber on the way to michigan sugar for a cookie factory in st. Louis and they all have to wait their turn in line at the double hump everything that moves through America loose through these yards exactly a lot of times you can tell how the economy is running out here just by what's coming into the yard itself all across the country people and free have to share the same tracks seeing these mile long slow moving freight trains heading out of Chicago to the long-distance rail network i can understand why passenger travel suffers 2010 the federal government pledged $MONEY billion dollars towards a potential solution the construction of new and upgraded tracks for speedier passenger rail system but that's only fifteen percent of the plans 53 billion dollar price tag even if all that funding comes through most long-distance travelers will probably still choose a different way to get from here to there one that's newer and much faster 17 this is the scene at houston's george bush intercontinental airport air travel more than any other mode of modern transportation has bridged our continent and sped up our lives and every year more and more of us are taking to the skies this is flight data for the 50,000 planes i will carry almost 2 million passengers today it shows how r airways connect every corner of the country from sleepy rural area strips to major hubs like chicago's o'hare international airport where on this day a plane is taking off or landing every 34 seconds that's nearly a million flights each year the fast system has created a completely new way of life people flowing through these airports are just occasional passengers there are new breed of road warrior who often fly thousands of miles every week one of those very frequent flyers is international insurance salesman deanery i'm doing final no I never checked bags morning how are you thank you a typical trip in miami tampa tampa Houston Houston vegas vegas to houston houston the Dallas of dallas to tokyo tokyo to hong kong macau as possible account shanghai shanghai at tokyo tokyo to LA to dallas dallas the Tampa that was 11 days Dean spend a lot of time in the air so we can maintain face-to-face contact with his clients around the world what are some of the inside secrets of the trade that people like you know that other people don't oh gosh I mean there's so many of them it's on every subject you know how you pack is a key one you know how you go through the security line it's all about logistics for the most part all the tricks and what do you do when something goes wrong you want to you anticipate it started to snow i've looked at weather.com or whatever so you start making backup reservations sometimes I'll have two or three reservations at a time have to be offensive vs defensive that's the secret of a real Road Warrior it's not just road warriors like Dean zigzagging through our skies air travel is so common today that our Airways are filled with all kinds of travelers some of them more unusual than others here are three regular passenger flights one passenger on each flight is traveling in cargo brought aboard in a special box called an air trade baggage compartments of commercial airlines are the most common way to ship dead bodies long distances everyday 50 are shipped from one state alone florida it's a retirement Mecca but when those golden years come to an end many deceased retirees are flown home for burial these passengers on the other hand are very much alive but they're under armed guard and they wear handcuffs as well as seatbelts they're traveling courtesy of the Justice Department which runs its own airline flying prisoners too distant court hearings or Penitentiary's and reporting some illegal aliens out of the country with so many people flying for one reason or another our skies are the busiest in the world but they weren't always so crowded i'm heading to mcdonald past Montana to visit a relic of our earliest days of flight transportation wise this place is definitely off the grid not fun feel like I'm standing on top of the world pretty much are we on top continental divide the call montana big sky country and it does look pretty empty up here but this 90-foot tower holds a clue to how we learn to navigate are crowded skies microorganism with the Montana Department of Transportation aeronautics division so I wouldn't be things that basically do the give you a visual reference when you're flying at night so these literally are kind of like lighthouses in the sky yes the story of this air beacon dates back to the birth of commercial air travel in the nineteen-twenties aviation companies were eager to fly cross-country but they had no way to navigate the night portion of the 30 hour trip so they invented one paying farmers to light bonfires in their fields creating a path of flames to guide pilots through the night soon replaced the bonfires with a network of 1500 gasps beacons coming in nicely 25 me way Ben by the 1960s modern radar was replacing the gas beacons except in Montana where the peaks of the Rockies block radar signals leaving pilots to rely on the old beacons so they wouldn't crash into the mountains to this day my continues to tend the beacons and make sure they're in good working order the heck of a client it's a long one isn't so this is what the pilots actually see this lamp is focused in the middle of this 24 inch mirror and as it's turning around you get sharp flashes you're you're approaching the beacon when you see the beacon it looks like it's flashing that's because it's turning around you only get them for a second even though every other state has long since abandoned the beacons we still live with their legacy many of the first radar towers were built along this network of gas beacons which means that if you take a commercial flight today and fly along one of the early skyways your path will look like a zigzag that traces the lines that sprang up from bonfire to bonfire and then become a beacon from bonfire to beacon to radar we've made progress but as our skies got busier we needed a way to handle the traffic enter the federal aviation administration faa which maintains our complex flight management system today here's how it works each airport control tower guides each plane to take off then a regional control center keeps tabs on it until it reaches 10,000 feet where the flight enters one of the 21 enroute centers across the country and watching over the entire system are the people in this state-of-the-art bunker in Northern Virginia people like flight manager Debra Griffith air traffic control system commands and places of minutes ya feel like a minute movie wargames or something now what are all those lights up on that screen those are flights those would be active lights in the system right now how many planes we look at during the peak portion of the day were five to six thousand flights active it's Tuesday afternoon just an ordinary day for Deborah was sort of a traffic cop of the skies morning everybody this is the perfect with you for the 1215 planning telecon we're going to start with New York having the gusty winds morning York morning thank you we are on a 33 love every two hours Deborah Leeds what could be the biggest conference call in the world thousands of passengers lives are on the line about west to Southern California track on you consider any more information right now just don't get it with the rbr the world feeling this every major airline airport shipping company the Secret Service NASA and the military listening for updates to the national flight plan to terminal history of our ceilings in this ok that will conclude this cell phone will be back with you at fourteen fifteen command centers out thank you as soon as she hangs up Deborah begins juggling this networks limited air space to keep traffic flowing down San Francisco Board can actually put ceilings in there for hours this morning alright she reroutes planes around san francisco's fog and ground others so they won't get caught in a bottleneck caused by strong winds over New York right now going down to the next four hours see how their rules so it's kinda like a butterfly effect where you have a destruction in one place in it ripples all the way across country it does have a ripple effect it does because New York is slow down its gonna historically slow down the other markets around it because those those airplanes go in and out of New York and go to Fort Worth and to houston and remember sentence kogda Cleveland all these flights depend on Deborah's ability to manage America's airspace she's good at it and the system works well most of the time but the problem with this system is that it's based on radar aging technology that requires air traffic controllers to leave large safety margins between each plane which means fewer planes can take to the sky with our Airways nearing maximum capacity the FAA needs a game changer if the air becomes a montana recall Aviation's past you can get a taste of our future by heading to an even more isolated part of the country this is rush are in Juneau Alaska only ten percent of this state is accessible by Road show up here every day commuting depends on pilots like Sam right wow this totally beats my own computer welcome to my office it may be beautiful but over the past 20 years one-third of all commuter plane crashes in the United States happened in Alaska and sand flies these treacherous skies everyday and what exactly is your job my job is to pick people and great male UPS FedEx from juno which is the Jetport to all the smaller communities around Southeast Alaska what are some of the more common and uncommon things that you transported well very very very very pregnant women taking the hospital for delivery i'm taking a piss you off because everyone that's a serious thing to me knock on wood I've made it every time wolves we carry pools and carry affairs carried a really pissed-off Wolverine is winter the Wolverine was going to finish soda or someplace to be bred and he didn't know that so he was spot-on so you really are sort of like the connective tissue that allows these outlying communities to interact on a daily basis with rest of the world that's true we look at ourselves more like a little air road system how hard is it to fly around here is it is a challenging well today's like a gorgeous day right you can see 480 miles hundred miles after some days we can only see two miles in Alaska as a montana rows of mountains block radar signals and the snow and fog can quickly roll in from the ocean forcing pilots to fly blind among the glaciers so pilots like Sam are using a new satellite-based gps system which unlike radar can reach every corner of their airspace so basically this shows you everything that's in your immediate vicinity right absolutely if you make a turn toward something higher than you that will turn red it will say hey this is red this is not a good idea in Alaska the accident rate for planes that have been equipped with GPS has dropped by almost fifty percent and this system that keeps Salmons passengers safe is beginning to have a much wider impact gps is a backbone of a new FAA plan called next-gen designed to completely overhaul air traffic control air alaska was one of the first airlines to test this new technology their pilots like Mike Adams welcome to one of the most advantageous features about the next-gen program ability now to navigate or directly these blue symbols represent ground-based navigation aids that prior times we would have been flying a zigzag line between those as we go from station to station now with GPS navigation we can fly directly from way . away . as you see here and that allows us to shorten our route distance create a more direct flight and that in turn freeze-up air space for other craft occupy hence increasing capacity the estimated cost for next-gen as high as much as a hundred and sixty billion dollars but it will allow the FAA dy 1.3 billion passengers a year by 2031 twice as many as I can handle today so far I've been traveling mostly on planes and trains all packed full of people the most Americans prefer their personal space so getting from A to B usually means one thing cars that's definitely true in dallas here like most of the country Americans take driving for granted return the key and go while driving feel of like individual choice it's only possible because of our system of highways which is one of the busiest and most sophisticated pieces of infrastructure in the world and we have grown so dependent on the freedom and mobility of the open road collectively driving three trillion miles every year at today the health of our country depends on the health of our highways so specialists like traffic analyst Greg Jordan work behind the scenes to help improve the flow of traffic like that beauty interchanges oddly elegant know it's kind of like some sort of geometric shapes an aerial perspective will give you an insight that is sometimes very hard to get on the ground he's right from the sky I can see where cars are bottlenecking and where they're moving along at a nice clip local transportation planners from New York to California value Greg's expertise he provides data so they can see for themselves where they need to invest in roads where they need to build new ones or widen them or increase Highway Patrol and are you actually getting that data well it's it's mainly time-lapse photography looking at the snapshots greg has taken over time which strikes me is not just the roads themselves but the number of housing developments hugging the highways this is a new development if this is in Louisville it's right near the newly completed state highway 121 so these communities are only possible because of that freeway the freeway is the lifeblood people like to say if you build it they will come and into a degree that's true of coming out with you build it that encourages people this is what more and more of our country looks like today a tapestry of suburban neighborhoods woven together by quiet streets and bordered by dizzy highways when the federal government started building these interstate highways more than 50 years ago they were intended to strengthen connections between far-flung cities but they ended up totally reshaping local communities this is what the sleepy town of arlington texas look like in 1950 and this is what happens when interstate 30 connected to nearby dallas and fort work highway stretching north from Dallas Lord people out to the cheap land and open space of Arlington and other suburbs like this one colleague and these suburbs gave birth to a whole new meaning of life this is a suburban dream the cul-de-sac big houses surrounded by green logs on a street with no through traffic but living here comes at a cost to understand that cost we used GPS to track the cars of everyone living on this tiny cul-de-sac for a week each color represents one of the five families that pink car is phil thompson heading to work their Savior ue driving her son's to school her husband Kip in the red car is on his way to the airport for a business trip our car culture is so common now that we forget how different it is from the rhythms of urban american life just a half-century ago modern suburbs promote a landscape where most things are accessible only by car so the suburban residents spend much of their time behind the wheel they drive to get coffee thank you to do their banking buy groceries in fact the dr fifty percent more than their parents did I probably put on maybe a hundred miles a day easily 25,000 30,000 miles a year but basically the assumption is that if you're gonna live in this neighborhood you have to have a car that's exactly right the way they design colleyville and in our community is this it's off the beaten path you have to drive 10 or 15 minutes before you get to a major road and all this driving means our families walk a whole lot less walking is definitely more recreational I walk the dogs in the neighborhood to the mailbox and back now the other walking i do is going to be from parking garages to appointments when I go to customer meetings between the rental car agency and and the gates of the airport's most of us don't mind all this driving but there's a problem as suburban life evolves and our daily destinations change our road system can't adapt fast enough look at our five families they rarely venture into the city of dallas all week our highways were designed to get people from the suburbs two jobs and stores in the central business districts but nowadays most people live work and shop in the suburbs and the smaller secondary roads are jammed on top of that since we built our highway system the population has doubled and the number of cars on the road has more than tripled that means more people stuck in traffic on roads that weren't designed to get them where they want to go at the end of the week after collectively navigating over 600 miles of suburban thoroughfares our family's return to the cul-de-sac there are the Johnsons last ones in yeah meanwhile few miles away road construction crews are just beginning the workday the dallas-fort Worth area planners are trying to reduce congestion by building the way out in the problem this place is home to more road construction than anywhere else in the country but it won't be long before this freeway attracts more people creating more traffic and driving demand for even more roads it's kind of an infinite construction loop some places are taking a different approach i'm heading to one of the nation's fastest-growing cities and one of his most popular destinations Las Vegas each year the city of 2 million has to move a rotating cast of 36 million visitors through its streets today the national finals rodeo is coming to town which means extra traffic pushing already crowded streets to their limit instead of building new roads as they do in dallas Nevada's transportation specialists are using technology to make the most of the ones they have we're taking into a place that we call the fishbowl jacobs know is one of Nevada's transportation experts wow this is impressive you know it really looks like we got some real rocket science going on her and we actually do it's a very complex system of hardware and software that we can monitor everything that's going on in the major intersections in the major traffic points in the las vegas valley and are these active 24 hours a day to 24-hour town gotta monitor traffic 24 hours a day for all this rocket science the most powerful tool is a device we often take for granted the old reliable traffic light or doing something that most other places in this country haven't tried that's adaptive traffic signal control if we get a lot of traffic on one particular direction or in one particular quarter we need to make changes on the fly so we can distribute the traffic more efficiently that's really a big brother-type approach hundreds of cameras feed real-time traffic data to the fishbowl where staff can adjust 1250 traffic signals to keep the roads moving so you're not adding capacity by building new roads you're just making the existing system smarter that's correct we can get about twenty percent additional capacity by implementing systems like this and for one one-hundredth of the cost of a freeway or a roadway expansion and it's not only cameras monitoring the action as a Saturday night rush art begins i'm heading out to the field with one of Nevada's road managers chuckles island to see how he solves problems on the frontline we do have some traffic backed up over there tens of thousands of rodeo fans are on their way to the stadium it to get all those cowboys and cowgirls to the stadium Chuck needs to make sure that each one of the city's busy intersections gets just the right amount of what she calls green time I am a little concerned about Spencer why that's a pretty long line of traffic so we're gonna do about that and what we're seeing is a lot of empty road way out here huh we're going to steal a little bring time try and get over here that's really interesting way to think about it I I never thought of traffic that way but you're actually thinking of green time as like a scarce resource a finite resource and you're trying to allocate it in the most efficient way possible that's exactly what heaven what we need is at Paradise Chuck calls a fishbowl to order up a new light pattern mount one paradise let's try and hold that one green as long as we can get it i'll be downloading in just a second just no way you can get everybody green it's not going to have so the best we can do is if you do have to stop here i want to get you as many lights down the street as I can before I have to stop you again light by light intersection by intersection Chuck stays one step ahead of grid log and get everyone to the rodeo ladies and gentlemen are ready around in this area lights cowboy out what up a little with him come on the party's over and i'm leaving Las Vegas and who do I see at the airport but that veteran road warrior deanery you all doing here passing through what are you doing here I'm flying back home i'm going to use that I got a flight in about half an hour higher good about Dean like most of us depends on a transportation system that's being pushed to its limits and those limits are put to the test every day on the streets of my last stop Los Angeles when it comes to our transportation triumphs and failures it's the ultimate example la has more cars than any other county in America 12 million of them it's a vast fleet that can move us to every corner of the county also 12 million reasons why you might not get there in time unlike Las Vegas la doesn't have road smart enough to move all this traffic and unlike Dallas there's no room here to build new freeways it's one more system limited by plans made in another era a hundred years ago most people in Los Angeles traveled by streetcar and they had the largest urban rail network in the world then in the nineteen forties the city abandoned streetcars and began an unprecedented freeway building frenzy this set of aerial surveys shows how freeways were designed to cut through neighborhoods that prompted activist to fight back and block construction of new roads as a result la was left with the worst of both worlds devastated neighborhoods and an incomplete freeway system this original freeway plan promised an additional fifteen hundred miles of road and here's what was actually built just 918 extra miles and the city has had to deal with that shortfall every driver in la experiences 64 hours of delays on average every year nearly three entire days spent stuck in traffic d miles per hour which is certain we're looking at down below as the i-5 freeway where their inching along it probably three miles per hour right listen let me just take a break here I've got a report coming up from the station but once again we want to tell you about that singular it up on the to Commander Tucker street is a city's last radio traffic reporter who still pilots a helicopter to hunt down bottlenecks and so far the east by 210 freeway was backed up to the 118 you know I've been up here doing a traffic watch over Los Angeles for 27 years have you seen a lot of changes in traffic of course the traffic is worse a lot more volume rush hour starts earlier last longer it starts out at some of the freeways coming in from the east at 5am Wow and it probably goes until about 8pm so calling you at rush hour is sort of a misnomer more like rest day yeah even the word Russian i think is appropriate for some reason here in Southern California computers are really independent souls and they they really like having that freedom but also I think that an automobile is kind of a statement about them and who they are do they think they are you can find their identity really what do you think's going to happen over time well I think the freeways will get so slow where a lot of people just decide it's not worth the grief and the stress so hopefully they will start a bracing mass transit a revival of its mass transit system might be Elias best hope to keep the city moving so the city is now investing in a dozen projects like this one you're looking at an old streetcar route that was paved over years ago and now it's being reclaimed for a new light rail line infrastructures cycle of life but these projects are big and expensive and it's hard to imagine the people of Los Angeles giving up their deep-rooted car culture la's and the tangle of roads and freeways another system at the breaking point like many other transportation networks there are plenty of ideas on how to fix this but the question is will we at every stage of our history we have answered the challenge of how to connect the country and move a nation today we're at another crossroads technology offers new solutions but to improve our system will need to invest a lot of money and change old habits this week as a nation will drive 60 billion miles traffic will make three million of us late for work 22,000 free cars will pass through the double hump on the way to every corner of the country so the only averaged 10 miles per hour deanery will earn another 5,000 frequent flyer miles and you'll have a lot of company in the air one quarter of all the flights in the world will take off or land in the United States and in the process airlines will lose 45 thousand pieces of luggage the largest transportation network on earth has its weak spots and it's definitely showing its age but we've managed to keep it up and running and for the most part it still gets us where we want to go as for me my journey across the country is about to end right where it started i'm heading back to New York on the red I'm just one more American on the move America revealed is made possible by the Corporation for Public Broadcasting and by contributions to your PBS station from viewers like you thank you
B1 中級 美國腔 生活在美國發現紀錄片2015高清 (Living in United States Discovery Documentary 2015 HD) 103 6 Fei Hao 發佈於 2021 年 01 月 14 日 更多分享 分享 收藏 回報 影片單字