USING LINEAR AMPS IN MODERN VEHICLES

Here's three websites that have authoritative information on the subject.
Also see notes on this subject in my "Installing Amateur and CB Radios in 2016 Tacoma" in the "3rd generation. Tacomas (2016+)" forum.

As mentioned in my installation:
INSTALLING AMATEUR AND CB RADIOS IN 2016 TACOMA
Toyota limits allowed radio transmitted power in all their vehicles (Except first responders, and those vehicles have very well shielded electronics and airbags.) to 100 watts; and that means a good installation 100 watts, not a sloppy one.

All the below are qualified sites for reference; ARRL is the American Radio Relay League.

Please pass this along to anyone else with this question.
It's very important that you not have stray RF, or excessive power, in any modern computer controlled vehicle; unless you like really seriously exciting, however short they may be, rides.
(Or it could just stop and refuse to move again; until your dealer tells you that your warranty is now worthless, because it was your fault you fried the electronics.)

http://www.arrl.org/auto-manufacturer-s-policies

http://www.eham.net/ehamforum/smf/index.php?topic=38793.0;wap2

https://books.google.com/books?id=PImqHW34Bt0C&pg=PA221&lpg=PA221&dq=RFI+problems+with+airbags&source=bl&ots=bBbeiLT_Qd&sig=QPEPJlCml6u2ppf8BONZgcSNwdc&hl=en&sa=X&ved=0ahUKEwjirYP8ns7XAhXhjlQKHaSpDLsQ6AEIYTAJ#v=onepage&q=RFI problems with airbags&f=false

To calculate your exposure at all Frequencies (CB Is 27 MHz or 27.000): http://hintlink.com/power_density.htm

Examples on CB Radio Frequencies are in Post 7, 8, and 9, below.
CB Radio Frequencies (27.000 MHz frequency band), 1000 watt linear amp, distance to antenna 10 feet, 2.2 Gain Antenna (Good CB Antenna)
CB Radio Frequencies (27.000 MHz frequency band), 500 watt linear amp, Antenna six feet away, Unitary Gain antenna (Gain of one).
CB Radio Frequencies, 100 Watt linear amp, antenna five feet away

 

Tested out my 2016 Tacoma; empty road, Kenwood TM-V71 on both 144 and 446 bands, full 50 watt output power.
No effects at all on truck or center dash infotainment system. Toyota rates their trucks to full 100 watts anyway; just making sure.

Did the calculations for safe power levels on both VHF and UHF, using the calculator at 50 watts http://hintlink.com/power_density.htm
Will usually keep it on the 10 watt output anyway.

Keep your installations clean, well grounded, well shielded, and within safe power levels.

 

RF (Radio Frequency) safety in vehicles.
My reference is The ARRL Handbook (American Radio Relay League), Safety Chapter (28).
Your CB is on what is known as 11 meters (11m) at 27 MHz. This is called the HF frequency range (High Frequency).
My Amateur radio is on both VHF and UHF, and my max output power is 50 watts. Normally I leave it on the middle power setting, and don't run the full 50 watts.

To calculate your exposure and safe levels, all Frequencies, (CB Is 27 MHz or 27.000) http://hintlink.com/power_density.htm

This is another reason why I would never install a linear Amp in a vehicle.

Four pages enclosed; first is front cover of my reference. This manual is available from the ARRL directly, Ham Radio Outlet (HRO) and other sources.

 

Examples are next, in post #7, #8, and #9

 

Example: This is what you get with a one kilowatt transmitter, on the CB Radio band frequency 27.000, Antenna distance 10 feet, antenna gain of 2.2.
Note the difference between safe level power density, and your power density, at this distance.
"Distance to Compliance" in the tables is the minimum safe distance for this power level.
"Uncontrolled Environment" Are you next to something highly RF reflective; I.E. a metal wall, or the hood of your vehicle?
To calculate your exposure, and safe levels for all frequencies, (CB Is 27 MHz or 27.000) http://hintlink.com/power_density.htm

 

500 watts at CB Radio Frequency 27.00 MHz, Antenna six feet away, Unitary gain antenna (Gain of one).
Again note difference between safe level and your level at this power and distance; especially if in a uncontrolled environment.
"Uncontrolled Environment" Are you next to something highly RF reflective; I.E. a metal wall, or the hood of your vehicle?
"Distance to Compliance" in the tables is the minimum safe distance for this power level.
To calculate your exposure, and safe levels for all frequencies, (CB Is 27 MHz or 27.000) http://hintlink.com/power_density.htm

 

Finally, a 100 watt linear amp in your vehicle at CB Radio Frequencies, Antenna five feet away from you.
Note that in the Uncontrolled Environment it is still not safe.
My background is Electronic Warfare, 23 years; worked around high powered jammers, and radars, one radar on one ship was 4MW at peak pulse (That's a 4 million watts peak pulse radar).
Have not acquired Cancer, Blindness, or "Glow-In-The-Dark" syndrome; hence knew what I was doing while around RF and Microwave Fields.
Just because you have been using linear amps for years now successfully, without apparent effects, does not mean the cumulative effects will not catch up to you eventually.