If you show up in something weird.they will send over three or four officials to look at it.they have a check list.but like I 's pretty loose. The are SO many different contraptions that show up to sand drags.they don't set many hard fast rules.
Fire jacket, fire suit if 3.5 seconds or under. Like drive shaft loops, blower restraints, 5 point harness. They 'recommend' a few things and some things are mandatory. Hey les are VERY loose compared to asphalt.