- Successfully passed mash tl-3 crash test, making it eligible for Federal funding
- Continued to function after mash tl-3 crash test
- May be installed in an existing concrete barrier or new construction
- Does not allow unauthorized u-turns (normally in raised position)
- Self-contained solar powered 24 volt dc
- Microprocessor controlled
- Activated by wireless remote or manual controller
- Lowers in about (10) seconds, raises in about 15 seconds
- Has entry control and warning light signals
- Equipped with emergency lowering and raising devices
- Has a self-diagnostic program that defines operational issues
- Allows operator to override certain operational issues
- Has battery charging regulator
- Has visible battery “condition” indicator
- Has visible cycle counter indicating number of MRG cycles
- Has ultrasonic “vehicle occupancy” safety protection
- Is counterweighted for energy conservation
- Has 9000 lbs force drive motor with overload protection
- Drive is sprocket / drive shaft / sprocket chain
MRG Basics
Cumberland Barrier's Goal
Cumberland’s owner, a Civil Engineer, decided to develop a gate that operated easily enough and fast enough that emergency responders could use it. The MRG was created and tested to meet Federal Highway Administration approval. No emergency access through concrete median barriers is a huge negative to public safety. Emergency median access is commonly provided through every median situation except concrete median barrier wall.
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