I submitted a pull request to the original repo
you can try my fork in the meantime
stop mm
cd ~/MagicMirror/modules
-rename the existing module folder to some other name
git clone https://github.com/sdetweil/MMM-TomTomCalculateRouteTraffic
git checkout withsuspend
then restart mm
then if you use ModuleScheduler or pages, carousel, or other modules that support hiding and showing you could validate that no api calls are made during the hidden time