California Motor Vehicle Code 23123.5
Prohibited Use of Electronic Wireless Communications Device
Vehicle Code 23123.5 works alongside 23123 to further extend the prohibitions of cell phone and wireless device usage while driving. Code 23123.5 explains that no driver of a motor vehicle is permitted to use an electronic wireless communications device to write, send, or receive text-based communication. More simply, do not "text" while driving.
This means that not only are drivers prohibited from talking on hand-held cell phones, but they are also not allowed to communicate to anyone via text-based conversation either on the cellphone, or through a lap top or other device.
To clarify this section, typing in a telephone number or pushing a button to receive a call is not considered sending a text-based message. Typing in a telephone number may be done if using a hands-free wireless device.
Like its other counterparts, this code has the same fines of $20 for the first offense and $50 for each continuing offense, and does not apply to emergency service professionals in the event of an emergency.