Traffic Lights and Drugs

Oh dear, those pesky facts and real life evidence from other countries getting in the way of blind prejudice again...
Exhibit One
London Assembly Tory transport spokesman Richard Tracey said:
“Every year Londoners waste over 170 million hours sitting in traffic, costing London’s economy £4 billion. Many of these journeys in our city are unavoidable.
"But rather than hurting motorists with ridiculous charges and taxes, we should look at innovative ways to cut congestion and make traffic flow more smoothly. Turning off traffic lights at night, like they do in parts of Europe and North America, is one measure which would boost the economy and help the environment.”
Exhibit Two
There is "no obvious" link between tough laws and levels of illegal drug use, a government report has found.
Liberal Democrat Home Office minister Norman Baker said the report, comparing the UK with other countries, should end "mindless rhetoric" on drugs policy. He accused the Conservatives of "suppressing" the findings for months.
Prime Minister David Cameron said the research did not offer "specific conclusions" and said he did not "believe in" decriminalising drugs.
It strikes me that there are so many well-documented real life experiments in most things from so many different countries, there's little room for airy-fairy debates any more. It's just a question of choosing the ones with the best outcomes.
That goes for speed limits, traffic lights, education, the health, immigration, the tax and welfare systems, legalising/criminalising drugs and prostitution, you name it.