WASHINGTON (WUSA9) -- VRE officials let all riders know where they stand on e-cigarettes on Tuesday.

In a statement, officials wrote: "Following the lead of other commuter agencies in America, our policy is to treat e-cigarettes like regular cigarettes products."

They admitted that "The jury is still out on whether the vapor from e-cigarettes is actually harmful" but are encouraging riders to "exercise the same societal cautions as you do for combustible tobacco."

The bottom line from VRE: "Do not do use on the train, and only use it on the 100 northernmost feet of the platform."