Minnesota Department of Transportation

This Transportation Research Synthesis highlights the benefits of improving access to data sharing, describes the implementation and research projects, provides an update on the status of implementation, and outlines next steps.

This project funded the manufacture and installation of 36 advance rest area signs along Interstate 35 (I-35), I-94 and State Highway 371, most of which included three-line listings of amenities at the rest area. The summary publication describes a customer service feedback survey. Among respondents, 33 percent indicated they had seen the signs, and another 29 percent indicated they were not sure if they had. Of these respondent groups, 61 percent described the advance signage as useful. The survey did not determine which listed amenities proved attractive or compelling to rest area users, but survey questions have been revised and the project team continues to gather responses.

This field manual provides guidelines for preventive asphalt pavement maintenance techniques for a variety of distresses and conditions. It covers: 1. crack treatments (clean and seal, rout and seal, full-depth crack repair); 2. surface treatments (fog seal, seal coat, thin hot-mix overlays); and 3. pothole patching and repair (cold-mix asphalt, spray injection patching, hot-mix asphalt, slurry or microsurfacing material).