only there once in a while. there are always orange barrels, there are almost always signs of some sort, there may or may not be traffic depending on the time of day and such, but there is one part of the construction process that is usually only there if the construction is on a two lane road. in fact, if it’s a two lane road like the country road i grew up on, it’s the first thing that you pay attention to as you approach the construction zone. in fact, where there is one it’s the most important part of the construction zone from a driver’s standpoint. any ideas? here’s 