Iowa workers typically do not work in a center lane only. Instead, work zone designs try to close the inside or outside lane in addition to the center lane to allow the workers an "out" lane if an … [Read more...] about Center lane closure
Iowa
Personal protective equipment requirements
See the Policies and Procedures Manual at the given website for Iowa DOT's PPE requirements. … [Read more...] about Personal protective equipment requirements
Time frame allowed for lane closure setup (e.g., 9:00am to 3:30pm)
Iowa general specifications state that no work can be done during hours of darkness (30 minutes before sunset to 30 minutes after sunrise.) … [Read more...] about Time frame allowed for lane closure setup (e.g., 9:00am to 3:30pm)
Lane lines in work zones
For standard applications, Iowa DOT's typical lane line width is 4 inches. In work zones, IDOT uses 8 inch wide lines in shift and merge areas. The decision to implement wider lane lines is based on … [Read more...] about Lane lines in work zones
Signing for the end of work zone
See Iowa's Standard Road Plans below for the signing for the end of work zone: Standard Road Plan 1 Standard Road Plan 2 Standard Road Plan 3 Standard Road Plan 4 … [Read more...] about Signing for the end of work zone
Application of types of temporary/removable pavement marking material and special linestriping material
In Iowa, the standard temporary and permanent work zone markings have been waterborne paint. The state uses temporary tapes on diagonal temporary lines where these lines go across the final or UAC … [Read more...] about Application of types of temporary/removable pavement marking material and special linestriping material