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
Iowa
Use of flashing stop/slow paddle
Iowa has improved highway work zone safety by outfitting its work crews with flashing stop/slow paddles. Iowa DOT purchased 75 flashing stop/slow paddles and distributed them to flaggers throughout … [Read more...] about Use of flashing stop/slow paddle
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
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
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)
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