Looking for information about the pavement smoothness specifications in the United States? You've come the right place! With just a few clicks, you should find what you're looking for... if not, please let us know.

For a quick lookup of the current pavement smoothness specifications for a particular state, use the following map or select the state from the drop-down menu and Go!
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State

Iowa

Specification	HMA	PCC
Testing Device	Inertial Profiler	Inertial Profiler
Smoothness Index	MRI	MRI
Blanking Band	N/A	N/A
Incentive/Disincentive	Both	Both
Localized Roughness Provision	Yes	Yes
Files	IA_ALL_1_1.pdf	IA_ALL_1_1.pdf

Please Note: The pavement smoothness specifications listed above represent the most "advanced" specifications available in each state. These specifications may or may not be applied to every project as some specifications are currently in the pilot phase of implementation. Please contact a state highway agency representative to determine the status of a particular specification. If you are a state highway agency representative and wish to provide updated information for this website, please contact us.