Number your hazzard to make it count!
1) Wet leaves
2) Wet Painted lines
3) Gravel
4) Ice
5) Snow
6) Frostbite
7) Fogging, if you are wearing eyewear, like you should
8) Cars and their drivers.
9) Weather: layers7) Yetis
10) Drivers who do not clear windows
11) Sewer, manhole, water main covers (wet metal)
12) Debris hidden under leaves
13) Thinking too much lists to focus on riding
14) Drivers with poor night vision
15) Windburn
16) Cars skidding on snow or ice
17) Drivers who think 4WD makes their car stop faster on ice
18) Deep rutted ice that is harder than diamonds and never melts
18) Pavement immediately before a stoplight where the exhaust from idling cars melts some of the ice, eventually forming a perfect slick - flat ice topped with a thin layer of liquid water.
19) Deep very wet snow
19) Salt and debris trapped in slush that can rapidly wear moving parts or chemically react with any exposed steel
20) chain rust
20) Less daylight
21) drivetrain upkeep
22) salt, salt, and more salt. (see #20 and #21 )
23) short days = riding frequently in darkness
24) crashing, not being able to move, then dying of exposure (maybe that's 2)
25) responding to the inevitable, "You didn't ride today did you?" queries posed by non riders.
26) having to roll with studded tires on dry pavement
27) deep cookie dough snow on top of ice in intersections
28) Other cyclists, ill prepared or inexperienced for winter conditions
29) impatient and distracted drivers who are driving home in the dark when, at other times, would be driving in the light. This frightened me in the suburbs more than nearly anything.
30) Holiday Shoppers!
30) drivers trying to see out of a postage stamp sized hole in their ice covered windshield while they drive.
31) snow and ice flying off minivans, SUVs and large trucks because their owners just couldn't be bothered to clear the roof.
33) the loss of the shoulder or bike lane as the case may be due to plowed snow.
34) Being forced into sketchy deep snow on the edge of the road in heavy traffic and fearing you'll go down and slide right under a car. (see # 33)
36: Deep breaths of cold air.
37: DOT trucks & their grit/sand/salt spreaders.
38: Any motorist.
39: Ice or snow or both falling from branches, wires, etc.
40: Mist obscuring visibility/icing your bike up.
41: Visions of hot cocoa distracting you.
42)Transients with fires, shopping carts, discarded trash and personal items on MUP's
43) Electrical failures on dark streets with abrupt edges
44) Sand drifts in the bike lane for months after the roads freeze and the city mostly grinds to a halt that one day in late January.
45) Black ice, often from frozen condensation on roadways when air temps are still above freezing and no precip has been recorded. Can be totally invisible, without even a sheen to warn the cyclist. Areas that are perpetually shady, such as north sides of buildings, are potential trouble spots.
46) Not having the correct change for the bus.
47). Deciding not to ride because there are too many hazards.
48) Beard Freeze
49) The snots
50) Sweaty back and frozen hands
51: walking inside a warm place before taking some layers off.
52) Snotcicles
53) SOP for bus drivers here, when the road is icy or covered in packed snow, is to stand on the gas and wait for the bus to move. Which makes for some highly polished and deep ruts.
54) Piles of brown sugar snow at intersections.
55) Slush at just the right (i.e., wrong) temperature caking and re-freezing in my bike's fenders.
56) Iced up drive train
57) Frozen freehub
58) Cold toes that suddenly feel warm again. (Hint: they are NOT warm!)