TRAFFIC CONTROL CONCEPTS FOR INCIDENT CLEARANCE
Figure 1. Component Parts of a Temporary Traffic Control Zone
Component Parts of a Temporary Traffic Control Zone, including: Advance warning area (advance warning signs, cones, flares, or emergency vehicles); Transition area (strategic use of tapers); Activity area (channelizing devices), buffer space (protected by energy absorption or attenuation devices or official vehicles) and work or incident area (responders); and Termination area (strategic use of tapers). Taken from the MUTCD.