TRAFFIC OPERATIONS
- Chapter 130 - SIGNING MANUAL (Rule 761-130.1)
- Chapter 131 - SIGNING ON PRIMARY HIGHWAYS (Rule 761-131.1 to 761-131.15)
- Chapter 132 - IOWA BYWAYS PROGRAM (Rule 761-132.1 to 761-132.7)
- Chapter 133 - Reserved
- Chapter 134 - Reserved
- Chapter 135 - WARNING LIGHTS ON VEHICLES OR EQUIPMENT NOT OWNED AND OPERATED BY THE DEPARTMENT WHEN USED IN ROAD WORK ZONES (Rule 761-135.1)
- Chapter 136 - LIGHTING (Rule 761-136.1 to 761-136.6)
- Chapter 137 - Reserved
- Chapter 138 - Reserved
- Chapter 139 - Reserved
- Chapter 140 - TRAFFIC SIGNALS AND BEACONS ON PRIMARY ROADS (Rule 761-140.1)
- Chapter 141 - Reserved
- Chapter 142 - SPEED ZONING ON PRIMARY HIGHWAYS (Rule 761-142.1)
- Chapter 143 - TRAFFIC SIGNAL SYNCHRONIZATION (Rule 761-143.1 to 761-143.5)
- Chapter 144 - [Rescinded] (Rule 761-144.1 to 761-144.9)
- Chapter 145 - Reserved
- Chapter 146 - Reserved
- Chapter 147 - Reserved
- Chapter 148 - Reserved
- Chapter 149 - Reserved
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
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