A pedestrian hazard detection system. The pedestrian hazard detection system has a housing that is sized and shaped to receive and secure a mobile device, such as a cellphone, therein. At least one sensor, such as a motion sensor, is disposed within the housing. The sensor can detect obstacles that are approaching and are in the vicinity of the housing. The sensor is operably connected to the mobile device and whereupon the sensor detecting the at least one approaching obstacle, a signal is sent to the operably connected mobile device to emit an alert. The alert can notify a user that the obstacle is approaching such that the user can take appropriate action to avoid a collision.
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