People often drive along familiar routes every day and know precisely the time required for reaching their destinations. This causes many to wait until the last minute and even later before starting their drive. That’s why the sight of a road construction zone causes many to get hot under the collar. Work zones can cause courteous drivers to get impatient and aggressive drivers to manifest road rage when construction work prevents a speedy commute. When you add this psychology to the objective dangers of lane mergers, concrete barriers, and narrow shoulderless lanes.

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