Hi-Vis Traffic Control Inc. – Gold Conference Sponsor Jess Owens2022-11-04T11:26:10-02:30March 21, 2018|2018, Announcements|0 Comments The NLCSA is pleased to announce Hi-Vis Traffic Control Inc. as a Gold Sponsor of our upcoming Health and Safety Conference on Thursday, April 19, 2018, at Cineplex, Avalon Mall, St. John’s.