Estimating the distance to a flashing light is far more difficult than to a solid light. Top marks to the French.
accept that fixed makes distance judgement easier
On PBP in 2015 static front and rear lights were a requirement, along with a reflective vest, although that may have been the organisers decision and/or local laws.
Have to ask myself,
"How often do I ride at night?" Answer, a handful of times per year.
"How often do I ride in France?" Answer, not in the last twenty five years.
I don't see a problem.
I hear that from January and French pedestrians at large during the hours of darkness will have to adorn themselves with Christmas tree lights and fire a very pistol every 50 paces. Anyone found in contravention the new regs will be given the choice of a 100,000 fine or five minutes listening to Charles Aznavour. The fine is predicted to be the popular option.
While searching for information on this I discovered it's illegal to use an ear piece, headphones etc. while cycling in France.
I rather like Charles Aznavour's songs. He wrote some great songs with good lyrics. Not the usual " I miss you, I love you etc.... " Meaningful texts he wrote.