Guardrail washer?

[*rfaulk34*]

(05-09-2017, 01:39 PM)fredtoast Wrote: On the way to work today I saw a water truck driving along the side of the road with a huge nozzle spraying the guardrail.  Looked like it was designed specifically to wash off the guardrail.  I though it might be some sort of weed killer they were trying to spray on the right-of-way, but it looked like high volume of water instead of a fine spray like you usually see with chemical sprayers.  Also it would have been very poorly designed as a weed sprayer because it was spraying most of it directly at guardrail level.

Never seen anything like that before, and I don't know why it would be necessary to wash guardrails.

How about you guys?

Dirty guardrails might be difficult to see at night if you need to pull over and change a tire.