BART's 4/20 plea: 'Please, please, please don't hot box our cars'

A BART train arrives at the West Oakland station after travelling through the transbay tube in Oakland, Calif. Click through the gallery for photos from past 4/20 celebrations. A BART train arrives at the West Oakland station after travelling through the transbay tube in Oakland, Calif. Click through the gallery for photos from past 4/20 celebrations. Photo: Paul Chinn, The Chronicle Buy photo Photo: Paul Chinn, The Chronicle Image 1 of / 17 Caption Close BART's 4/20 plea: 'Please, please, please don't hot box our cars' 1 / 17 Back to Gallery

It's 4/20, and that means something of a conundrum for California public agencies. People getting behind the wheels of their cars while high is bad. But a train full of apocalyptically stoned people trying to get even higher while their fellow riders just try to commute in peace is also bad.

What's the answer? For BART, it's a humble plea: Don't hotbox your BART car.

"Take BART instead [of driving] but please, please, please don't hot box our cars. Smoking is not allowed. Not even on #420."

MORE: BART posters promote etiquette on trains

Caltrain, too, would like you to abstain from a mid-commute toke of the ole reefer.

"REMINDER: there is no toking, vaping, smoking, hot boxing nor puffing allowed on #Caltrain, or our platforms. Thank You, and have a nice day. #420day #HippieHill" Caltrain tweeted.

There are other options for people trying to get around California on this highest of high holidays: AAA expanded its holiday "tipsy tow" service to 4/20 for the first time this year since recreational marijuana use is legal now, and Lyft is offering discounts in honor of the holiday.

Sadly for BART, it would seem some people are leaving the pleas unheeded and hotboxing train cars.

ALSO: The strangest BART antics that have made the news

And at least one person on the internet thinks the transit agency should just embrace the inevitable.

"yo but it should be allowed," one visionary replied. "y'all need a car where people can hotbox, stash their bikes, and write on the walls already. #yayarea"

Is that the future? Time will tell. Happy 4/20.

Filipa Ioannou is an SFGATE staff writer. Email her at fioannou@sfchronicle.com and follow her on Twitter