Concrete grinding is a safe, efficient, effective, economical, and permanent solution to removing trip hazards.
Most business and home owners are aware of the problem but are unaware there are options. Previously there were two viable options, either fill the deficiency with grout or mortar (which is at best a temporary solution), or remove and replace the concrete (which can be rather expensive). Concrete grinding provides a third choice which just makes sense.
Trip hazards are possible medical and legal litigation nightmares that can be avoided.
According to the ADA (Americans with Disabilities Act) guidelines a trip hazard is a 1/4" change at a joint or crack. HUD defines a 3/4" deflection in elevation as a trip hazard.