Okay so I made a bet with my roommate about a sign we saw today. I came home and Googled to find it, but am not seeing it. I was sure I was right, but I don`t know if I`m so sure any more lol. Any ways, we were at an intersection with 2 left turn lanes. The sign on the signal shows 2 left arrows. They said in the far left lane I could u-turn because there wasn`t a no u-turn sign. I said you can`t, and used the next intersection as proof. Because it had a left arrow in the 1st left lane and a left arrow with a u turn arrow in the 2nd. I`ve been driving 25 years, and have always thought this. But after I bet them, I really started to wonder if I`ve always been wrong here. Them saying "it doesn`t say no u turn" is kind of resonating with me. I`m not understanding the 2 different signs, if I can u turn on sign that has 2 left arrows, why isn`t it showing the U turn arrow I see at about every other light? I`m confused and I feel like I`m dumb for not knowing this
Anyone in Cali who could point me to where I can see what the heck the 1st sign means? I might get a free lunch if anyone can help, or have to treat a lunch if I`m wrong, like I am often lol. I Googled traffic signs and see like a ton but of course not the single one that will help me.
Or, if I`m wrong and someone tells me I am sure my roommate will just accept a free lunch without picture/description proof. I just need picture proof if I`m right.

Anyone in Cali who could point me to where I can see what the heck the 1st sign means? I might get a free lunch if anyone can help, or have to treat a lunch if I`m wrong, like I am often lol. I Googled traffic signs and see like a ton but of course not the single one that will help me.
Or, if I`m wrong and someone tells me I am sure my roommate will just accept a free lunch without picture/description proof. I just need picture proof if I`m right.