Cross traffic alert detects vehicles that approach at a speed between
4–37 mph (6–60 km/h). Coverage decreases when the sensors are partially, mostly or fully obstructed.
![Blind Spot Information System at Parking Space](https://www.fordservicecontent.com/images/imagen/imagen2.dll?w=600&id=E142440_EUR&t=JPG)
The sensor on the left-hand side is only partially obstructed and zone coverage on the right-hand side is maximized.
![Rear Cross Traffic Alert](https://www.fordservicecontent.com/images/imagen/imagen2.dll?w=600&id=E142441_EUR&t=JPG)
Zone coverage also decreases when parking at narrow angles. The sensor on the left-hand side is mostly obstructed and zone coverage on that side is severely reduced.
Note:
Slowly reversing helps increase the coverage area and effectiveness.