Bristol is the only city in the UK to have been shortlisted for the 2014 Green Capital Award, and as such has a strong environmental ethos. Upgrading its streetlights forms part of the city's energy reduction scheme to generate substantial carbon savings. Much closer to daylight, white light offers advantages in the fact that pedestrians feel more secure in their environment and car driver reaction time (mescopic vision) is at least six times quicker. Bristol Council has rolled-out the street lighting upgrade in two phases, the first of which saw the replacement of around 8,000 existing high pressure sodium lamps to GE's CMH Streetwise ceramic metal halide lamps over a one year period. Phase two of the upgrade began in July 2012 and over the course of the next 12 to 18 months will see the replacement of a further 12,000 lamps in Bristol's residential areas.
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