How should tracks be drawn on a PCB to comply with best practices?

Tracks on a printed circuit board (PCB) should be drawn neatly and with the correct thickness to comply with best practices for several reasons. Neatness ensures that the tracks are clearly defined and free from unwanted bends or loops, which could affect the performance and reliability of the circuit. Proper thickness is crucial because tracks must carry specific amounts of current without overheating. Different widths may be necessary for different sections of the circuit based on the expected current load, and adhering to standard thickness guidelines helps avoid issues such as signal integrity problems or damage to the PCB.

While using colors or high contrast might enhance visibility during the design phase, they do not directly relate to the function or reliability of the PCB. Similarly, long overlapping lines could complicate the circuitry and potentially lead to errors during manufacturing or reduce the performance of the board. Therefore, maintaining neatness and correct thickness is foundational in achieving a professional and functional PCB design.