A section of the N4 was converted to LED street lights from conventional lights.
The cost saving on the electricity was 68.1% on the electricity bill per month. The maintenance saving was 90% during the last year.
LED lights carry a warranty of three (3) years however it has been recorded that lights have lasted as long as eight (8) years. In various other projects across South Africa it has indicated that there was no loss of luminosity over a period of three (3) years.