Final answer:
The incorrect statement about freeway use is D, which suggests crossing solid lines immediately after entering or before exiting is correct. In reality, crossing solid lines is typically illegal and unsafe, contrasting with options A, B, and C, which correctly describe freeway features and safe driving practices.
Step-by-step explanation:
The incorrect statement about a freeway is D. While using a freeway, cross a solid line immediately after entering or before exiting. It is generally against traffic laws to cross solid lines on the roadway as they indicate areas where lane changes are unsafe or prohibited. The correct manner by which to enter or exit freeways is to follow the dashed lines that typically indicate these transitions to and from acceleration and deceleration lanes.
Concerning the other options: A is correct as most freeways do have deceleration lanes to assist drivers in safely exiting. B is true because freeways are designed for higher-speed traffic with features such as on-ramps, off-ramps, and multiple lanes to facilitate the flow of traffic. And C is also correct, stating that one should enter a freeway smoothly by accelerating to match the speed of the traffic already on the freeway.