Reflection on my first designs and further development

I am excited about the current direction of my project, yet there are problems to be solved. Clarity of the signs, effectiveness through the right use of shapes, colors and symbols and effective placement in the streets are the three aspects that I am focused on.

In the beginning I created some more designs by making the person pictured on the sign facing the viewer:

Perhaps this approach does not get the message across. Who is the audience? 

1. Smartphone users being warned that they should "Look ahead".

2. Pedestrians are warned of smartphone users' existence .

3. Both of the above.

Another element that this design lacks of is the illustration of the crash. The message of the sign is to make people walk carefully and look less at their smartphone screens. The danger should be made clear and obvious. 

I created designs that show the smartphone user in pain. The sense of pain is communicated by using symbols like the crash and the stars:

In my first design pedestrians are warned about a general approaching danger. Two people bump in to each pother if either of them does not look to where he is going. It feels clearer than my previous designs. Anyone can relate to the individuals on the sign and act carefully. 

However I designed the two signs shown below in an effort to be more specific and directly communicate with the smartphone users. 

Additionally, these signs would be more effective if put on the ground so that people that do not walk properly can see them: