The transport is a major use of energy, and burns most of the world’s petroleum. This creates air pollution and is a significant contributor to global warming. The transport is the fastest-growing emission sector and the road transport is the largest contributor to global warming.
Lots of countries all over the world developed special environmental regulations to support and encourage the reduction of the individual vehicles emission.
The other significant environmental impacts of transport systems is traffic congestion and automobile-oriented urban sprawl, which can consume natural habitat and agricultural lands.
Reducing the transportation emissions globally, will affect positively on Earth’s air quality and will reduce the acid rain, smog and climate change.
Smog is strongly linked with transportation and industrial activities, notably in urban areas. Smog is particularly dense during a thermal inversion (static regional air masses that enable the accumulation of pollutants).
Transportation accounts for around 30% of total carbon dioxide emissions in developed countries (15% worldwide).
96 % of the world’s transportation energy currently supplied by oil.
Still 46% of population that has no access to public transit.
European freight continues to be transported by truck, greenhouse gas emissions will increase by more than 40 per cent from 2000 to 2015.
If only 40 per cent of total freight was carried by rail instead, there would be no increase in emissions in the next 15 years.
For every passenger-mile travelled, public transportation produces 95 percent less carbon monoxide and nearly half as much carbon dioxide and nitrogen oxides as private vehicles.
Railways are crucial to reducing greenhouse gas emission and to creating sustainable transport systems.
Hybrid electric vehicle and electric car are a good alternative for clean transport.electric car
A hybrid electric vehicle (HEV) is a type of hybrid vehicle and electric vehicle which combines a conventional internal combustion engine (ICE) propulsion system with an electric propulsion system. A variety of types of HEV exist. The most common form of HEV is the hybrid electric car, although hybrid electric trucks (pickups and tractors) and buses also exist. Modern HEVs make use of efficiency-improving technologies such as regenerative braking, which converts the vehicle’s kinetic energy into battery-replenishing electric energy, rather than wasting it as heat energy as conventional brakes do. Some varieties of HEVs use their internal combustion engine to generate electricity by spinning an electrical generator (this combination is known as a motor-generator), to either recharge their batteries or to directly power the electric drive motors.
An electric car is a plug-in battery powered automobile which is propelled by electric motor(s). Electric cars have the potential of significantly reducing city pollution by having zero tail pipe emissions. Electric cars are expected to have a major impact in the auto industry given advantages in city pollution, less dependence on oil, and expected rise in gasoline prices.