For freeways, TC-1A and TC-1B signs must be installed at distances of 1 km and 2 km from the work zone, respectively. TC-101B must be used on roadways with more than two lanes, and posted limits of 70 km/h or higher.
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For freeways, TC-1A and TC-1B signs must be installed at distances of 1 km and 2 km from the work zone, respectively. TC-101B must be used on roadways with more than two lanes, and posted limits of 70 km/h or higher.