Troopers never enforce it however. A broken white line on a two lane highway means it's OK to pass slow moving cars on the left if the coast is clear in-front of you. Source(s): Alignment, suspension and brake shop. In Europe, it means you may overtake, but with caution. A soild line means to not cross over.
Best Answer: There have been 6 manned Moon missions, between 1969 and 1972. I'm assuming you mean manned trips to the Moon. All of those were conducted by the US, from 1968 through 1972; 9 missions in all. Apollo 8 was the first time man visited the Moon, in December 1968 right at Christmas time. It was famous for the reading from Genesis on Christmas Day.
The last moon mission. The last Apollo mission in 1972 was the longest moon mission - the crew lived on the moon for three days. They spent over twenty hours exploring the moon's surface, taking 115 kilograms of soil and rocks for study back on earth.