wind noise obscuring traffic noise My eyesight isn't so good so I'm more reliant on my ears to let me know that there's traffic close by.  Normally I'm fine, but at higher speeds, the noise of wind blowing past my ears can obscure the sound of car engines, so I get a bit less warning when there's something near, especially of drivers coming up from behind.  As far too many drivers coming up from behind are really inconsiderate and pass too close when overtaking or tailgate you, not knowing that there's someone coming up is something of a problem.  

How can I deal with reducing wind noise so I can hear my surroundings more clearly?
There's a product called cat ears (reviewed here) that claim to reduce wind noise. They attach to your helmet straps and disrupt the flow of wind.

I've also found that headbands worn over the ears help a lot. Something like these are good. I even wear them in summer as they help stop sweat running into your eyes.