Thousands of vehicles travel on our country’s highways. Many of them are large trucks transporting many different types of cargo. Trucks provide a necessary service for us and we must share the road with tractor trailers at all hours of the day and night. We all must be aware of the dangers to remain safe on the road. Lane Use Large trucks are not allowed in the far left (passing) lane on multi-lane highways. This is a safety requirement. Blind spots Just like cars, trucks have blind spots. Truck drivers.