Honk? Talk!

BMW Research Compitition winner, 2018    
ACM Designing Interactive Systems 2019 ︎
Team lead, Human-Computer Interaction Research, Interaction design

Collaborated with
Eun Jee Sung, Hyesun Chung, Jooseung You

도로 위에서 누군가와 소통하기란 매우 어렵습니다. 경적을 울리거나, 손을 흔들거나, 깜빡이를 켜는 정도 외에는 제대로 된 소통 방법이 존재하지 않습니다. 이로 인해 난폭 운전, 보복 운전이 일어나거나 사고가 발생하기도 합니다. 
 다른 방식의 커뮤니케이션이 가능할까요? 운전자들은 서로 어떤 말을 하고싶을까요? 어떤 방법이 가장 효과적인 커뮤니케이션 방법이 될까요?

Driving is a social task where drivers should constantly communicate with one another. However, existing driver-to-driver communication methods have mainly focused on safety-related issues, thereby overlooking the social aspect of drivers’ communication needs. We aimed to shed light on drivers’ needs for richer driver-to-driver (D2D) communication and design future D2D communication methods.

History of the internet communication

1976, internet communication starts
1982, emoticon came out
1999, emoji came out
2017, AR emoji came out

History of the in-vehicle driver to driver communication

1976, nothing changed
1982, nothing changed
1999, nothing changed
2017, nothing changed

Scenario-based Interview & Analysis

We conducted scenario-based semi-structured interviews. Through a literature review, we se-lected four different situations that can be easily observed in today’s road environments.
Moreover, two scenarios from each perspective (sender and receiver) were formulat-ed for each situation. We recruited 14 people of both genders and a range of ages (24-56), driving experience (1-36 years), and nationalities (Koreans, Australian, American, and Malaysian).

Scenario images

ased Interview & Analysis


1. Drivers Want to Use Social Cues for Affective Messages

When conveying affective messages such as ap-preciation, an apology, or a protest, most participants wanted to use social cues to add nuance to their messages.
“I think emojis would be better. […] In general cases, they(emojis) would appeal to someone better (than other methods).”

2. Drivers Want to Put More Details

Most participants wanted to convey more information via their messages. In particular, one pointed out that blinking and honking had often oversimplified the messages.
“Text would be better. (I just want the message to be delivered) just as it is. Headlight is broken, trunk is open, it it necessary to send correct information.”

3. Drivers Want Varying Scopes of Communication

As the current means of the communication, whether sound or light, does not allow changes of the scope of the signal, these methods often become an obtrusive distraction to nearby drivers. Most participants reported that they had experienced being surprised by car horns, and that they tried not to use them if not necessary
“The messages given to me should be shown to me exclusively.”

+ Drivers Want Different Modalities of Communication Considering Different Perspectives

As senders, participants preferred more auditory methods of communication; as receivers, participants preferred “less intrusive” visual methods.
“Well, I think my attitude just changed. (When I am a sender) it’s me who has to act, right? […] I have to show appreciation, so before (when I was a sender) I preferred the strongest method[…]”

Design Ideas

First, the communication method should be able to incorporate social cues when delivering effective messages

Second, drivers should be allowed to deliver detailed messages.

Third, the communication method should allow drivers to select those with whom they want to communicate.

User Testing

Simulation Setting

Emoji-angry: Sent

신호를 지키며 정상적으로 주행하던 테스터가 뒤에서 달려오던 차가 들이받자 ‘화나요’ 이모지를 보냈고, 이후 해당 차량은 미안하다는 의미의 이모지를 보내 대답하는 장면이다.

Voice-trunk open: Sent

앞에 지나가는 차량이 트렁크가 열려있는 것을 확인하고 트렁크가 열렸다는 정보를 음성 메모로 전달하는 장면이다.

Emoji-angry: Recieved

좌회전을 해야하는 상황에서 줄을 서지 않고 끼어들기와 난폭운전을 하여 줄을 서서 기다리던 다른 운전자들의 화나요 이모지를 다량 받는 장면이다.

User Interface 



AR ideation

Sending ‘thank you’ emoji with gesture 
Sending ‘like button’ to one of the favorite restaurants

ACM Designing Interactive Systems 2019

Me at the poster session

Me and my teammates met Don Norman at the UCSD campus