[personal UX/UI review] Seoul subway color for Line 6

<case: subway Line 6>

Issue: color difference between signs and train which can confuse people

Recommendation: make both colors the same 

[Personal UX/UI review] subway ticket gate machine design

<case: subway ticket gate machine at Konkuk Univ. Station in Korea>

Issue: 1. twisted diagonal design makes passengers to twist arms to badge 2. badging area seems to be too large and can be misunderstood like below marking

<the same machine in a different angle>

Recommendation: like image below, 1. let passengers badge without making them twist arms 2. make badging area design intuitive enough so that no one get confused

[Personal UX/UI review] signage designs and promotional message in subway

Positive: positive expression for restrictive message

Context: The yellow flyer states "We welcome credit cards for 5,000 KRW or above purchase" where the sales person could have said "We don't take credit cards below 5,000 KRW." I thought that this is a smart approach to turn a negative message to positive. 

Positive: simple but intuitively understandable 

Lesson: symbolize things if they are common to users 

Issue: both signages have the same direction (redundancy) 

Context: The signage on the left and right both included opposite end destinations. If you are a first time visitor for this station following colors and station names, you will stop and wonder at least once at the signage to make sure you're heading down to the correct path. This is unnecessary because choosing either path will lead to the same second floor of this subway basement. Passengers don't need to stop here and spend time to choose directions but stop on the second floor of the basement because redundancy means inefficiency which leads to wasting people's precious time.

Recommendation: if two directions on signages are the same, delete both directions and leave them empty to avoid confusion and unnecessary time for passengers to stop to figure out which one goes where

[Personal UX/UI review] TV screens inside of subway

Issue: no indication on next stop on screen

Recommendation: always include next stop conveniently on screen so that passengers don't need to look around to find one 

[Personal UX/UI review] signs in Seolleung Stn. perhaps

Issue: the ceiling sign has misled me not to go under the sign but look for an exit sign located on the far left on this photo

Recommendation: include exit numbers in the ceiling sign for passengers' intuitive understanding of direction