People like to drive on the backside of Haleakala /Hana... Roads are one lane, gravel and drop off into the ocean at points... It is the locals way of getting out into the city.. So it is seen as disrespectful and dangerous... Thus discouraged
Someone hacked the computerized road closed sign to say:
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.