HAM use for emergencies

I want to get a HAM radio (handheld preferrably) and HAM license to use in area where there is NO cellphone signal. I drive a fuel tanker and if I have an emergency (particularly Highway 32 in Butte/Tehema County in California) I want to be able to notify someone. Sparsely driven at night, no homes visible from road, mountainous area. Would it be worth my effort to get this equipment? I have NO IDEA how reliable HAM use is in that area?



I have NO knowledge of HAM repeaters in that area as I am new to this endeavour. I know they are around due to scanner traffic.



Thanks for your help.

HAM use for emergencies