The first stage of a mass transportation system has been unveiled in the Thai capital, Bangkok, which it's hoped will reduce the city's notorious traffic jams.

The electric railway, known as the Sky-Train, runs along more than twenty-kilometres of track above Bangkok's polluted streets.

The government hopes the system will persuade thousands of residents to leave their cars at home, and eventually form part of a much larger transit network.

The Sky-Train, will have to undergo a further year of tests before it opens to the public.