AUTOSAR's free pdf file Guidelines for the use of the C++14 language in critical and safety-related systems (defined as an update to MISRA C++ 2008) - http://www.autosar.org/fileadmin/standards/R18-10_R4.4.0_R1....
Note that both MISRA and AUTOSAR's guidelines have been combined into a single standard "MISRA C++ 2023" which has been updated for C++17.
Breaking Down the AUTOSAR C++14 Coding Guidelines - https://www.parasoft.com/blog/breaking-down-the-autosar-c14-...