Questions tagged [transport]

moving people or freight from one place to another. This includes use of cars, trucks, buses, aircraft, watercraft, as well as non-fuel-intensive transportation. For questions specifically about cars use that tag.

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15 views

Are there long-distance water pipelines emanating from the North American Great Lakes region? Why or why not?

Are there long-distance water pipelines emanating from the North American Great Lakes region? Why or why not? Under what circumstances would this be an ecologically reasonable way to provide water to ...
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1answer
26 views

What is the difference in CO2 emissions between new and old double decker buses?

The Euro 6 bus WHTC test cycle here shows a value of 4.0 carbon dioxide and the Euro 5 ESC & ELR test cycles show a value of 1.5 CO. https://en.wikipedia.org/wiki/European_emission_standards It ...
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59 views

How much weight would a wireless charging system add to an electric bus?

Wireless charging requires a number of 'receiving charging pad's and a 'management module' and I imagine there will be additional wiring. How much extra weight does this add to an electric bus?
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63 views

Lowest energy use per passenger-km, electric bicycle or electric unicycle?

Which uses less electrical energy per passenger-km (pkm) travelled? Electric bicycle (with a single rider) Electric unicycle (aka. self-balancing personal transporter) I have heard that a standard ...
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1answer
72 views

Which countries, regions, or cities have set a date to ban the sale of gasoline and diesel cars?

This week, the UK announced that sale of gasoline and diesel cars will be banned by 2035. This new policy moves the date up by five years, and also includes hybrid vehicles. From 2035 on, only ...
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1answer
92 views

How much CO2 does a plane produce per additional kg of weight?

There are many figures regarding how much CO2 is emitted per passenger and per km. However, I have not been able to find anywhere how much CO2 would an airplane emit if it has to carry an additional ...
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125 views

How much of a reduction of carbon emissions can be achieved if a diesel bus is switched out for electric?

My city council has pledged to try and be carbon neutral by 2030 as part of the Global Covenant of Mayors and are investigating ways to achieve that. I'd like to bring forth an idea to replace our ...
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4answers
76 views

How to design a taxi rank to charge electric vehicles whilst waiting for fares?

This post deals with the design of a taxi rank and how to reduce the pollution created by idling and edging foroward. A few answers suggested that making the taxis switch to hybrids, or even better ...
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5answers
63 views

How to prevent pollution caused by a taxi rank? Is there a solution to the 'edging forward' cost of cars in a queue?

I am looking at ways in which a heavily polluting taxi rank near a train station could reduce its pollution footprint. My first thought was that the pollution was mostly down to idling and I am ...
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2answers
524 views

Preventing idling - ideas to keep warm in a car when the engine is off and it is cold outside

I have asked a few people whose cars are idling if they mind switching them off to reduce pollution. One response I get from quite a lot of people is that they need to keep the car running to enable ...
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31 views

EU Real Driving Emissions testing (RDE) - does it factor in real driver behaviour and the inefficient driving habits they often exhibit?

Drivers often floor it at the lights, a large number switch off their start/stop systems, they might idle for an hour to listen to the radio, exceed the speed limit and exhibit other inefficient ...
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Why are new cars being built in the UK / europe without Start-Stop technology when it seems it can lower pollution?

Everything I have read online seems to indicate that start / stop technology reduces air pollution, is (marginally) better for the engine, reduces emissions and is more economical (link1, link2, link3)...
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Plane and train greenhouse emissions - comparison taking infrastructure in account or not?

In the news or various other places, we see often that train travel produces significantly less greenhouse gas than air travel, without much information about how this is calculated. For example here :...
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91 views

Does Start / Stop technology in cars have an impact on air quality and by how much?

I have repeatedly heard from various car enthusiasts that start stop technology has no benefit in improving air quality (or the tiniest smallest negligble benefit). Does it have an effect and how much?...
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180 views

How does the climate impact of an LNG-powered cruise ship compare to flying?

Taking the Iona as an example, it is claimed that "The cruise ship will have a reduced carbon footprint with zero sulphur and nitrogen emissions." Sulphur and nitrogen, while pollutants, are not ...
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2answers
79 views

Should I use a plastic trash bag for my recycling bin at home or not?

I want to have a recycling bin at home in addition to a trash bin. Should I line my recycling bin with a trash bag and bag it up when it's full to toss in the dumpster's recycling bin? Or should I ...
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1answer
66 views

Are there examples of (more) sustainable scientific conferences?

Scientists frequently speak out about the dangers of climate change, and I'm sure there are many scientists who make concious choices for their own lives with a view towards sustainability. But are ...
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1answer
63 views

To what extent do CO2 emissions from motor vehicles vary?

Do the CO2 emissions from petrol / gas vehicles vary depending on driving style? Are emissions a function of the engine type or the fuel efficiency? If a motor car is rated at 105 g/km, but it is ...
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1answer
58 views

Costs of transportation

I assume that it makes sense to ask for the energy costs of transportation of different goods per weight and volumetric mass density, depending on the means of transportation (truck, train, ship, etc.)...
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1k views

Method of transport with decent speed/low cost without a driving license?

I'm looking for something a little bit better than your average bike in terms of transportation potential, but cannot be a license-required vehicle as I cannot get a driver's license. I also don't ...
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1answer
187 views

If I plan to drive on soft ground, what can I do to avoid sinking in?

I'm expecting tons of wood chips to be dropped off in part of my yard every day this year, and am wondering what I need to do so the arborist can easily drop them off as close to where I want them as ...
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2answers
100 views

How to persuade people that scrappage schemes & suchlike are a bad idea?

One idea frequently cited as a way of reducing pollution is the use of scrappage schemes and low-emission zones to persuade people to replace their old cars with newer, 'more efficient' ones. IMHO ...
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1answer
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How much increase in GHG emissions is caused by Amazon Prime?

From Wikipedia: Amazon Prime is a paid subscription service offered by Amazon that gives users access to free two-day delivery (one-day in some areas) [...] and other benefits for a monthly or ...
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163 views

Home delivery versus going to stores: how does fuel usage for transport compare? Any studies available?

We see more and more trucks riding through our streets delivering individual items. This hardly looks sustainable. I wonder how the transport footprint compares with the 'old' delivery model of ...
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1answer
77 views

Can Asphalt and concrete be recycled at long term?

Asphalt and concrete are substances where a lot of heavy metals and other materials being hazardous to one's health are being "deposited". But what to do with them when concrete and asphalt have ...
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1answer
87 views

Is delivery of mail to house doors by postal services more sustainable than picking up mail from a central location?

Today there exists more than one mail and parcel services to distribute deliveries. I wonder about sustainability effects, especially when you receive several deliveries a day. When everybody has to ...
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1answer
105 views

In which cities “free” public transportation generated positive impact, no impact or negative impact to sustainability?

In Europe there are discussions about free public transportation to reduce pollution in cities. Even when in Germany first attempts failed due to economical and political arguments, the discussion ...
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147 views

Mindset change in developing countries

I've travelled a bit in Africa, Middle East, and Asia. What strikes me, in all of these places, is that often in the most poverty-striken areas, things that people look up to are big cars, and ...
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152 views

Being a sustainable Digital Nomad in a Van - First Steps

I am considering the purchase of a retrofitted Ford Transit with a Diesel motor to have a more flexible option for travel and accomodation. Since I aspire to reduce my footprint (and increase my ...
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8answers
409 views

How can I make my family understand my CO2-emissions-related hesitation to fly in order to spend time with them?

I live in another country, approximately 2000 miles away from my family. Now, my parents have really hard time understanding the kind of personal sacrifices which are necessary to keep the world a ...
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2answers
218 views

Is flying more sustainable than taking the train?

This paper argues that flying and taking the train compares in terms of energy - can this really be true? I am thinking that energy is a reasonable measure of sustainability although comparing ...
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1answer
122 views

How does transportation cost depend on food?

Given that two foods requiring refrigeration have the same weight and volume and are being shipped from one location to another via the same method, how does the environmental impact of that ...
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What are the environmental consequences of shipping food across the Atlantic Ocean [closed]

For a given weight and volume of food requiring refrigeration, how much worse would US manufacturing need to be than Western European manufacturing to environmentally justify purchasing imported food? ...
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1answer
200 views

Does putting an automatic car in neutral when stopped help save petrol?

In Australia, most cars are automatic, and most people stay on "drive" while braking when stopped at a red light (i.e. if they weren't breaking, the car would drive forward). I was wondering if ...
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4answers
920 views

Most environmentally friendly mode of transport

You often hear "Walk, it's better for the environment", but is that actually true? If I walk 5 miles instead of taking say a public bus, given that I now will need to replace the energy I spent ...
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2answers
169 views

How to choose a more sustainable vacation option?

Background In general, for a given transportation medium, modes of transport that are more densely populated are more efficient than those that are more sparsely populated. For example, it is not a ...
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2answers
433 views

Is buying online more sustainable than in local shop next door?

I was planning to buy a toy. I can buy it online and in local shop next door. Price is (including shipping in case of online shop) more or less the same. Is one more sustainable than the other?
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687 views

What measures could be taken to decrease the air pollution in a big city?

I live in Madrid, where like in most big cities there is a high level of air pollution, especially due to the traffic. The levels of pollution reached the maximum allowable level a couple of months ...
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1answer
98 views

Is sustainable passenger traffic across the Atlantic possible?

The current preferred means of travel from New York to London or Paris is the jet plane. Which is a shame, because: It is poorly designed. The fact that "it is the best we can do" is no excuse. It's ...
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1answer
95 views

Are trolleybuses better, worse, or about the same, as streetcars in terms of sustainability?

The one advantage they have is they don't need tracks, just overhead cables. Thus, only the rolling stock requires any serious maintenance. Implementing a trolleybus system in any city would be ...
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1answer
41 views

Larger package or more local source?

Is it possible to calculate impact of more packaging versus farther transportation? The two options are: 1. say: two half-litre glass bottles with local (made-in-this-country) oil; 2. say: 1 litre ...
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231 views

What is required to make air travel sustainable?

Is there a plausible scenario where humans can continue traveling in airplanes? I have heard that airplanes create a tremendous amount of greenhouse gas emissions, the global number of air miles ...
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1answer
65 views

Comparative impact of individual airlines

Are there any significant differences to the ecological impact of flying based on which airline you choose? The Guardian seems to suggest that maximizing economy seats per plane could help determine ...
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2answers
111 views

Curbing non-exhaust (non-tailpipe) transport emissions of particulates

Small particulate matter (PM10, PM2.5) is a nasty pollutant that is prevalent in a lot of cities. Some of these emissions come from exhausts (tailpipes); regulation has spurred on technological ...
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1answer
143 views

documented research on best practice for encouraging behaviour change towards more sustainable transport?

Cars have large overheads in terms of energy, materials, physical space requirements, accident casualties, and local & global pollution. But, particularly in anglophone countries, few ...
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2answers
112 views

When transporting high-end food stuff from Chita to Moscow, which method is more fuel efficient, by rail or by air?

Chita is a Russian city nestled between Mongolia and Manchuria. Although Chita is located on the trans-siberian railway, I wonder if it is more energy efficient to ship 100 tons of cut beef every day ...
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1answer
90 views

5 Questions to indicate carbon impact

It looks like I will have the opportunity to add a few (probably only 5) questions to a questionnaire to get an indication of the persons carbon footprint. The questions I am think of are: 1) How ...
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1answer
236 views

Is an electric vehicle more sustainable just because it runs on batteries? [duplicate]

So, is driving an EV (like the Tesla Model S) actually sustainable? Does it not matter how the actual power/energy was created? Does this matter?
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What kind of population-to-agriculture relationship is the most sustainable? [closed]

City/Rural Relationship High concentration of humans and low concentration of agriculture that are largely fed by areas outside the city that are very low in human population but are very high in ...
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1answer
124 views

What are the sustainability issues in moving house?

We are moving house from one side of the UK to the other. The financial costs of doing so have raised the facetious question would it not be cheaper to sell everything here and buy it again, there? ...