True...but you know the light is there and “should” be ready for it...most have advance flashing light warnings ahead of the intersection. At least its that way on roads I travel.
The J intersection is much more random and uncertain with regard to speed of the merging traffic, yeilding, the judgment of the turning driver with regard to distance etc. IMHO, a turning tractor trailer rig trying to get back up to speed would be a huge concern to me especially in more adverse conditions like snow, rain or fog.
Jug handles work fine even for semis and cars.
They work great in Michigan .
If anyone has issues with them or has speed and distance perception issues, they should not be driving.