Installing traccar.org on raspberry pi 3

from fresh raspbian distribution image
in a terminal

1. expand filesystem and refresh raspbian
raspi-config
follow instructions to expand filesystem to fill SD card
sudo apt-get update
sudo apt-get upgrade
1.a optional - I operate via RDP gui: sudo apt-get install xrdp

2. download traccar.org Linux ARM
currently this version:
https://github.com/tananaev/traccar/releases/download/v3.6/traccar-linux-arm-3.6.zip
extract to e.g. /home/pi/downloads
sudo /home/pi/Downloads/traccar.run

sudo /opt/traccar/bin/traccar start