Even with a perfect map, you might fail. Here are the three deadliest errors.
At lower levels, you could place a building anywhere, and it would function. At Level 5, you unlock the ability to upgrade roads and, more importantly, you begin to feel the crushing weight of traffic congestion and service coverage failures. If your layout remains a chaotic grid of intertwined residential and industrial zones, your city will grind to a halt.
it rather than in a long line so they all fall within its green highlight zone. The "Block" Method Arrange your houses in 2x2 blocks