An accidental death rider provides additional coverage with double the face value of an insurance policy if the insured's death is the result of an accident. (bestliferates.org)
Some examples include accidental death benefit, which pays double the face amount for accidental deaths, and child term rider, which adds coverage to the child of the insured. (briansoinsurance.com)
If a rider is purchased, the policy generally pays double the face amount if the insured dies from an accident. (en.wikipedia.org)