Despite a ban on the use of pressure horns and sound-emitting devices, truck and bus drivers continue to use pressure horns.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/over-500-challaned-using-pressure-horns-2017
[2] http://admin.indiaenvironmentportal.org.in/category/author/avneet-kaur
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/tribune-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/heavy-duty-vehicle
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment