The man, who was identified by police as 29-year-old Alexander Dunn, was booked on suspicion of delaying a police officer, trespassing on state property and failure to obey a regulatory sign.
Dunn, who performs under the stage name Dephree, was being recorded throughout the incident, his producer told The Times. They planned to release the images in a music video Wednesday evening, said King Graint.
The California Highway Patrol began receiving reports of a man on a traffic sign just after 8 a.m., said Officer Dion Conley. Callers reported the man was hanging banners, while others questioned whether he was suicidal.
“Fight pollution not each other,” one of the banners read.