In 2002, I bought a Trek blinker. Sad.
Then in 2004 I bought a Planet Bike Superflash blink. Excellent at night. Worthless in mid-day summer sun.
I 08 I heard about Rob Dinotte's 400R "I thought you were an ambulance."
10X the price of my Superflash.
It proved well worth it. Daytime honks went from several per ride to about 1 per month.
What happened? Daytime drivers could see me 200-400 meters ahead of them, and cooly move to the left lane without any stress. No more seeing me 100 feet ahead, closing fast, hard braking and getting anger-stirring adrenaline rushes.
Rob DiNotte invented the high-viz daytime rear light. Since his invention, many others have joined the fray. He deserves a place in he Bicycling Hall of Fame for inventing the category of daytime-driver-alerting bike taillights.