Ride Quality Testing


LMI provides California Profilograph Testing Services that measure a pavement's smoothness, and define areas of surface irregularities and bumps.

In accordance with the California Test Method, LMI measures the number and magnitude of ‘bumps’ exceeding the specified standard and provides a Pavement Ride Index (PRI) for each roadway segement.

LMI provides the service of identifing and locating "must grind" areas, also know as bumps exceeding a specific standard.

LMI also provides skid resistance testing services, typically utilized following recent construction activities.


  • Skid Resistance Testing
  • Pavement Ride Index (PRI)







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