Maryland Rumble Strips
We've done dozens of rumble strip jobs in Maryland each year for the last several years. As a rumble strip contractor in Maryland, and being based in Maryland, we know know many of the state inspectors, as well as the state specifications. Since we're located right here on the eastern shore of Maryland, if you need rumble strips installed, we're right around the corner. We're the only rumble strip contractor in Maryland, and because of that, we can offer prices lower than competitors, especially since we're already here, with no major traveling expenses! However, no matter where you need rumble strips, we'd be interested in hearing from you and/or giving you a quote!
In case you're looking for Maryland rumble strips specifications, below are pdf files from Maryland Department of Transportation. These files show the specs for rumble strip depth, width, spacing and locations, including critcal locations.