road hazards

1) Black cars at night. Especially when their headlights aren't working properly. Navy blue cars are pretty hazardous at night too.
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2) Motorcyclists riding tandem on 90km/hr expressways.
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3) Old folks who insist on walking on the road instead of on the pavement. (What is it about walking on the road that so fascinates them? Are our pavements inadequate?? And why is it always older people who do this???)
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Speaking of hazards. Surely the Americans who are giving Trump the lead in the nominations race are a biohazard to humanity.
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