I ride that to school, so I do go through alot of traffic. (traffic-delays alone is 15 to 30 minutes a day)
I also face about 4 bridges, 2 of them are for going over a river and 2 over a highway.
My VO2 max was first measured at 31%, 6 weeks later it was 34,4%. (quite bad)
I don't know what it'll be now.
The last measurement was 3 weeks ago.
Usually I drink about half a litre of energy drink (monster energy, juice) in the morning and I take a few supplements.
I wear 2 t-shirts and one sweater on top, a trouser and a sports trouser underneith to withstand the cold but I usually I heat up within 10 minutes even at 0 degrees celsius.
I don't even need gloves or something

I better not even wear them, they'll be soaked.