A hybrid vehicle is one that uses two or more distinct types of power, such as submarines that use diesel when surfaced and batteries when submerged. Other means to store energy include pressurized fluid in hydraulic hybrids.
Hybrid powertrains are designed to switch from one power source to another to maximize both fuel efficiency and energy efficiency. In hybrid electric vehicles, for instance, the electric motor is more efficient at producing torque, or turning power, while the combustion engine is better for maintaining high speed. Improved efficiency, lower emissions, and reduced running costs relative to non-hybrid vehicles are three primary benefits of hybridization. (Full article...)
Image 22Customized motorcycle to maximize load capacity. Mobility is important for motorcycles, which are primarily used for transporting light cargo in urban areas. (from Transport)
Image 23European rail subsidies in euros per passenger-km for 2008 (from Rail transport)
Image 36Bulk cargo of minerals on a train (from Rail transport)
Image 37A cast iron fishbelly edge rail manufactured by Outram at the Butterley Company for the Cromford and High Peak Railway in 1831; these are smooth edge rails for wheels with flanges. (from Rail transport)
Image 38Passengers waiting to board a tube train on the London Underground in the early 1900s (sketch by unknown artist)
Image 39Tunnels, such as the Tampere Tunnel, allow traffic to pass underground or through rock formations. (from Transport)
Image 40An ambulance from World War I (from Transport)
Image 53The Great North Road near High gate on the approach to London before turnpiking. The highway was deeply rutted and spread onto adjoining land. (from Road transport)
Image 54Bridges, such as Golden Gate Bridge, allow roads and railways to cross bodies of water. (from Transport)
Image 55The Lockheed SR-71 remains unsurpassed in many areas of performance. (from Aviation)
Image 60Bardon Hill box in England (seen here in 2009) is a Midland Railway box dating from 1899, although the original mechanical lever frame has been replaced by electrical switches. (from Rail transport)
Image 61Swiss & German co-production: world's first functional diesel–electric railcar 1914 (from Rail transport)
Image 62A prototype of a Ganz AC electric locomotive in Valtellina, Italy, 1901 (from Rail transport)
Image 64According to Eurostat and the European Railway Agency, the fatality risk for passengers and occupants on European railways is 28 times lower when compared with car usage (based on data by EU-27 member nations, 2008–2010). (from Rail transport)
Image 65German soldiers in a railway car on the way to the front in August 1914. The message on the car reads Von München über Metz nach Paris ("From Munich via Metz to Paris"). (from Rail transport)
The Moscow Metro in Moscow, Russia, is the world's most heavily used metro system. It is well known for the ornate design of many of the stations (such as Kievskaya Station, pictured), containing stunningly beautiful examples of socialist realist art. In total, the Moscow Metro has 277.9 km of route length, 12 lines and 171 stations. Although passenger traffic is considerably lower on weekends, on a normal weekday the Metro carries 10.05 million passengers, bringing the average daily passenger traffic per year to 8,745 million passengers per day. Moscow Metro is a state-owned enterprise.
... that a section of Mississippi Highway 489 was designated as the Jason Boyd Memorial Highway to commemorate the MDOT superintendent who was killed while removing debris from the road?
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