Street lamps in the city were introduced in 1785. Until the introduction of electric street lighting, the street lighting was done by oil lights. Till 1857, there were only 200 oil light lamps. By the year 1910, this was increased to 6,500. In 1910, electric street lighting was introduced. By 1924–1925, all the oil lights in the streets of the city were completely replaced by electric lights. The corporation also maintains 264 high-mast lights and 133 8-meter and 12-meter lamp posts with cluster lights at important junctions. The Corporation owns 22 hydraulic vehicles for attending maintenance work to streetlights. In 2012, the Corporation started installing 60,000 streetlights in the newly included zones, in addition to replacing about 88,000 old streetlights in these zones. Per the norm of the corporation, the minimum distance between two adjacent streetlights is 25 metre.