Where should a Portable Changeable Message Sign (PCMS) be placed relative to a major freeway lane closure decision point?

1. Directly inside the merging taper behind the first channelizing cone.
2. At least 1,000 feet upstream of the decision point or advance warning signs.
3. Adjacent to the work crew inside the activity area for maximum visibility to approaching traffic.
4. In the termination area past the work zone to inform exiting traffic.