Effectiveness Analysis on Human-Machine Information Interaction of Intelligent Highway

Table 3

Arrangement of test for each subject.

S/N	Traffic condition	Information trigger timing	Information trigger frequency	Voice information form
1	High traffic	Short distance	Low frequency	Beep
2	Low traffic	Short distance	Low frequency	Beep
3	High traffic	Short distance	High frequency	Voice broadcast
4	Low traffic	Short distance	High frequency	Voice broadcast
5	High traffic	Long distance	Low frequency	Voice broadcast
6	Low traffic	Long distance	Low frequency	Voice broadcast
7	High traffic	Long distance	High frequency	Beep
8	Low traffic	Long distance	High frequency	Beep