Cyclist sentenced to probation in SF road rage attack

Ian Hespelt, 39, was arrested on suspicion of four felony charges, including assault with a deadly weapon, stemming from an Aug. 28 attack during a Critical Mass bike ride. Ian Hespelt, 39, was arrested on suspicion of four felony charges, including assault with a deadly weapon, stemming from an Aug. 28 attack during a Critical Mass bike ride. Photo: SFPD Photo: SFPD Image 1 of / 9 Caption Close Cyclist sentenced to probation in SF road rage attack 1 / 9 Back to Gallery

Ian Hespelt must also take 16 weeks of anger management and pay more than $1,800 in restitution as a condition of his sentencing, according to the district attorney’s office.

He has already served six days in jail as part of the sentence.

Video of the August attack shows Hespelt, 39 at the time, using a metal U-lock to smash the driver’s side window of a Subaru along Marina Boulevard near Lyon Street.

Hespelt and other cyclists had initially blocked the woman’s station wagon in the middle of the street after he accused the driver of hitting him.

He began hitting the car as she drove away, breaking the windows and coming within inches of the woman’s head.

Police arrested Hespelt days after the incident on Sept. 5 as he rode near AT&T Park during a Billy Joel concert, easily recognizing his distinct handlebar mustache. He was released after posting $90,000 bond, which a San Francisco judge lowered from $145,000.

Hespelt made a plea agreement in June and pleaded guilty to felony assault and vandalism.

He initially faced additional charges of maliciously throwing a substance at a vehicle and false imprisonment but prosecutors decided not to pursue those charges.

Chronicle staff writer Evan Sernoffsky contributed to this report.

Jenna Lyons is a San Francisco Chronicle staff writer. Email: jlyons@sfchronicle.com Twitter: @JennaJourno