Where are U-turns not allowed?

Answer: C — On autobahns and multilane highways

U-turns are not allowed on autobahns and multilane highways due to safety concerns and the design of these roadways. Autobahns and multilane highways typically have high-speed traffic with limited access points, and making a U-turn in such environments could create significant hazards for both the driver attempting the maneuver and other road users. The high speeds involved do not allow for safe U-turn execution, increasing the risk of accidents. In other settings, such as residential areas, there may be circumstances where U-turns can be made, although they should still be executed cautiously and with consideration for local regulations. On bridges and at traffic lights, U-turns may also be restricted but generally depend on specific traffic signs and local laws governing those areas.