A motorcycle rider who witnesses say was popping a wheelie through the streets of Napa was in critical condition after colliding with a vehicle Sunday, Napa police said.

Witnesses said Chaz Baldwin, 22, of Napa was riding a Suzuki motorcycle at high speeds, at one point popping a wheelie, while headed west on 1st Street. As he approached McKinstry Street, he collided with a Toyota Highlander, driven by Kathy Atkinson, 62, of Salt Lake City. She was turning north onto McKinstry Street from the opposite direction on 1st Street, police said.

The collision sent Baldwin flying off the motorcycle and into a 1st Street building, police said.

He was taken to Queen of the Valley Medical Center for emergency treatment and was in critical condition as of Monday night, police said.

Police are still investigating whether alcohol was involved and the exact cause of the collision.

Witnesses are asked to call Officer Tom Helfrich at 257-9223.

Sizing up public transit fares

Santa Rosa to San Rafael $9.50 adult for one way on the SMART train; $8 one way on Golden Gate Transit Bus.

Sonoma County Transit one-way $3.90 for the 40-mile plus trip between Cloverdale and Rohnert Park/Petaluma.

Santa Rosa City Bus, Petaluma Transit and Marin Transit have one-way adult fares of $1.50 and $2 within their service areas.

Altamont Commuter Express $13.75 for 75-mile trip between Stockton and San Jose. From Livermore to San Jose, approximately 40 miles, the fare is $9.

Caltrain’s adult cash fare for the 41-mile trip from San Francisco to Sunnyvale is $7.75.

Capitol Corridor’s adult fare for the 66 miles from Oakland to Davis is $27. The 45-mile trip between Suisun City and Sacramento is $16. The 15-mile trip between Davis and Sacramento is $9.

SOURCE: SMART staff research