Here are a few winter riding tips from the Portland Office of Transportation, a place where they know a thing or two about wet road conditions.
Stay Dry and Warm
You don’t need the latest and greatest cycling gear to get around town by bicycle. A decent rain jacket and pants are your best defense. They both cut down on wind and keep you dry. If you can afford it, GoreTex or other breathable fabric will keep the rain out and keep you from feeling clammy. Fenders are also a very good investment — they keep your clothes from getting gritty and dirty. Nice extras include waterproof gloves, a snug hood or cap, a synthetic layer next to your skin to wick away moisture, and rain booties to go over your shoes.
Use Front and Rear Bicycle Lights
Lights are required by law when riding after dark. A white light visible at least 500 feet to the front, and a red light or reflector visible at least 600 feet to the rear. These lights allow other people to see you from the back, front and side. For more visibility at night wear bright clothing, an orange vest, or use reflective tape. The more reflectors whether blinking, flashing or solid, the better.
Brake Early and Often
Allow plenty of stopping distance. Gently squeeze your brakes in the rain to clear the water from you brake pads before you need to stop.
Avoid Some Painted and Steel Road Surfaces and Leaves
Steel plates, sewer covers, grates and other metal can be very slick in the rain. For paint, Portland City crews use non-slick paint and plastics for bike lanes and bicycle markings (and those blue bike lanes); however, crosswalks and other painted surfaces can be slippery. Avoid using your brakes or turning on these painted surfaces and on leaves and oily spots.
Stay Out of the Puddles
While it is tempting to splash through puddles especially if you have really good rain gear, a puddle can disguise a very deep pothole.
Slow Down on Newly Wet Roads
That first rain brings all the oil on the road to the surface making for a slippery ride. This is especially true after a long dry spell. Give yourself longer stopping distances and keep a firmer grip on your handlebars.