Those lights are too close together to be differentiated by an approaching motorist. Think about it: car blinkers are 5 or 6 feet apart. Bike blinkers that are only 6 inches apart or less are not going to be very useful because it will just look like a blinking light (too close to center of bike) to a motorist.

You may wish to take a bicycling class offered by the League of American Bicyclists (for those of you in the US) to get more comfortable on the bike and in traffic.