Tst ivm.clk mmh2 clkh2 achf nopl spfp4 uam1 lsph nmim1 slnm2 crtt spfp misp spfp1 spfp2 clik2 clik3 spfp3 estr".split(" "); Tank trucks ("tankers" in the united kingdom) are made to have liquids or gases. They usually Possess a cylindrical tank lying horizontally on the chassis. Quite a few variants https://www.truckspares365.co.uk/hub/hgv-marker-lights/