Several new laws take effect that affect a variety of drivers, including motorcyclists.

Here are summaries of those laws, courtesy of the DMV:

–Motorcycle instruction permit (Assembly Bill 1952): This new law requires a person under age 21 to complete an approved motorcycle safety course before being issued an instruction permit for a motorcycle and requires the permit to be held for six months before being issued a class M motorcycle driver license. More than 6,000 drivers 19 years and younger are licensed to ride a motorcycle in California.

–Traffic violator school program (AB 2499): Before this new law, the DMV only licensed and regulated “brick and mortar” classroom traffic violator schools. Now, with the new law, court-approved courses, such as online and home study traffic schools, will be covered by the DMV traffic violator school licensing program.

–HOV lanes (SB 535): Old law permitting certain fuel-efficient, low-emission vehicles to display stickers allowing them to be operated in HOV lanes with a single occupant was to expire Saturday. The new law extends the “sunset” date for the yellow stickers for hybrid vehicles until July 1; extends the white stickers issued to fully-electric and compressed natural gas vehicles until Jan. 1, 2015; and creates a third sticker, for plug-in hybrid vehicles, to be issued and valid from Jan. 1, 2012 until Jan. 1, 2015.

–Organ donation (SB 1395): Starting July 1, the language on the DMV’s application for a driver license will include a “no” option relative to an applicant’s willingness to register as a prospective organ donor to increase the number of enrollees in the organ donor program. This change will now require the organ donor registration field of the application to be answered with either a yes or no response.

–Local traffic ordinances (SB 949): On July 1, in an effort of ensuring that traffic convictions are recorded by the DMV, local authorities may not enact or enforce a local ordinance on any matter covered by the California Vehicle Code.

–DUIs (AB 160) Effective Jan. 1, 2012, this law authorizes a court to order a 10-year revocation of the driver license of a person convicted of a third or subsequent DUI violation, with possible reinstatement after five years if specified conditions are met.