Just a tip for anyone reading through all the comments. Don’t drink ICE COLD water when the temperature is way up high (30’s) as it will only shock your body.. The water should be cool but not ice cold.
And be sure to stay out of the sun if you can. If you are directing traffic in the sun you should have someone come and replace you after 30 – 45 minutes, if they say they cannot have you replaced then you run a VERY, VERY high risk of getting Heat Stroke (Which can KILL!)
Heat Stoke is caused by the body not being able to dissipate heat fast enough. Of course wearing body armour and a stupid yellow thing standing in the sun works wonders for the body and it's efficient cooling systems! Either take off your body armour and direct traffic or keep drinking LOTS of fluids, attempt to stand in the shade..
Information about Heat Stroke can be found here:
Or if you’d prefer the NHS word on it:
It’s serious. So take care out there..