Rail Freight Transportation
“How is cargo moved by rail?”
Most cargo is traded by sea. However, many communities live inland and far away from any port. So how do they receive cargo? Well, quite simply, their items are loaded onto a train and moved around via Rail Freight Transportation. Rail freight transport can be extremely cost effective, costing only 2.5 US cents to move one ton a kilometer.
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Why Telecommuting Should be Considered Apart of Sustainable Transportation
“Why should we include telecommuting into sustainable transportation?”
When sustainable transportation is conjured up, images of electric vehicles and bullet trains are conjured up. However, since a core component of sustainable transportation is taking vehicles off of the road, telecommuting should be considered. Telecommuting allows people to skip traveling, whether it be a car to work or a plane to a meeting, thereby saving on greenhouse gas emissions. This is Why Telecommuting Should be Considered Apart of Sustainable Transportation.
“How do modern vehicles integrate their control systems with all of their components?”
Modern vehicles have a large amount of components which need to interact with one another. Using traditional end-to-end systems would be overly cumbersome, so engineers had to come up with a new system. This resulted in the development of the CAN Bus. CAN Buses are buses that electronic components can plug into. Because components can communicate across a single interface, CAN ends up being low-cost, centralized, resilient, efficient, and flexible. These factors led CAN buses to become the industry standard in controls.
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“How do we design cities and municipalities?”
Today, around 55 percent of the world lives in urban areas and that number is rapidly growing. That means as cities expand and new towns are built, there must be significant planning done to ensure livability and proper operation of all infrastructure, whether it be in transportation, utilities, or amenities. This can be accomplished through the use of Urban Planning, or the study of how to design urban conglomerates.
Why Liquid Hydrogen in Vehicles Can Be Very Dangerous
“What are the dangers of liquid hydrogen fuel in vehicles?”
Hydrogen fuel cell vehicles are a very hot research topic. However, liquid hydrogen vehicles present some strong dangers. Although sealed hydrogen is relatively safe, exposed hydrogen has some factors which can make it less so. First of all, hydrogen can catch fire really easily as it only requires 1/10th of the energy to combust compared to gas. Hydrogen flames are also nearly invisible and can displace oxygen in human lungs, making it a very silent killer. This is Why Liquid Hydrogen in Vehicles Can Be Very Dangerous.
How an Electric Vehicle’s Speed is Limited by its Back-EMF
“What is the primary limiting factor in an electric vehicle’s speed?”
Cars take can take us from one place to another at incredible speeds. However, Like everything in this world, things can only go as far as technology allows for. For electric motors, the faster the motor spins, the more back-emf will be generated. Once the back-emf is equal to the supply voltage, the electric potential will cancel out and there will be no more motion. This is How an Electric Vehicle’s Speed is Limited by its Back-EMF.
The EPA Federal Test Procedure and Why It Is Important
“How are vehicles tested for emissions and fuel economy in the United States?”
In the United States, in order to sell a car the emissions and fuel economy must be known. But how can this be accomplished? Well, what if we were to make the vehicle undergo a series of standardized and controlled drive-cycles and measure fuel consumption? This way, not only can we measure its performance for that trip but compare it to every other vehicle that underwent a similar trip. Well, it turns out the EPA does exactly with The EPA Federal Test Procedure.
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