Why should you avoid overtaking alongside the roadworks site?

Your answer is fully correct. Avoiding overtaking alongside roadworks is important because of several safety reasons according to German traffic rules:

1. The time saved by overtaking in such areas is usually negligible, so it is not worth the risk.

2. In construction zones, lanes are often narrowed and temporarily marked with yellow lines. Vehicles in the right lane might need to cross these yellow markings to avoid obstacles or follow changed lane patterns, making overtaking risky.

3. Due to the altered road layout, presence of barriers, machinery, and possibly workers, the likelihood of accidents increases significantly if you try to overtake alongside the roadworks.

In summary, German traffic regulations emphasize safety and caution in construction zones. The combination of limited space, changed lane markings, and higher accident risk makes overtaking in these zones unsafe and generally discouraged. Recognizing and respecting these conditions helps protect all road users and workers.