All of the toll roads I have ever driven on still follow the same confusing, overly complex, and unsafe system that was introduced in the mid 1950’s except they’re maxed out supersized versions with millions upon millions of vehicles. One example, the High Five Interchange, which is a massive, chaotic highway that consist of two different toll roads. There are numerous problems with this type of setup, such as: crisscrossing traffic when entering or exiting the freeway, merging lanes or a sudden reduction of lanes, U-turn lanes without traffic lights, confusing or vague signs, stop signs on the freeway, intersecting traffic, sharp bends, constant construction lanes, police pulling people off onto the shoulder to hand out tickets and all of this is occurring at high speeds of 65-90 mph/105-145 km/h, on average. This is incredibly dangerous. The central expressway (US HWY 75) and LBJ (I-635) aka the High Five Interchange has been listed as one of the most dangerous intersections by TxDot (Texas Department of Motor Vehicles). (source) Also, locals have voiced their concern about feeling unsafe and generally dissatisfied while driving on these massive highways.