Research Article

Effectiveness Analysis on Human-Machine Information Interaction of Intelligent Highway

Table 2

Content of voice broadcast under various combinations of trigger timing and trigger frequency.

SceneHigh frequency/short distanceHigh frequency/long distanceLow frequency/short distanceLow frequency/long distance

Speed limit changeThe speed limit 200 m ahead is 80/60 km/hThe speed limit 500 m ahead is 80/60 km/hThe speed limit 200 m ahead is 80/60 km/hThe speed limit 500 m ahead is 110/80/60 km/h
The speed limit is 80/60 km/hThe speed limit 200 m ahead is 80/60 km/h
The speed limit is 110/80/60 km/h

OverspeedYou are speeding. The speed limit is 80/60 km/h. Please slow down.Speed camera 500 m ahead. The speed limit is 80/60 km/h. Please slow down.You are speeding. The speed limit is 80/60 km/h. Please slow down.Speed camera 500 m ahead. The speed limit is 80/60 km/h. Please slow down.
You are passing through with an overspeed of XYou are speeding. The speed limit is 80/60 km/h. Please slow down.
You are passing through with an overspeed of X

Sharp turn/continuous turnSharp turn/continuous turn 200 m ahead. Please slow down.Continuous turn 500 m ahead. Please slow down.Sharp turn/continuous turn 200 m ahead. Please slow down.Continuous turn 500 m ahead. Please slow down.
Sharp turn/continuous turnContinuous turn 200 m ahead. Please slow down.
Continuous turn

Long and steep downhillLong and steep downhill 500 m ahead. Please slow downLong and steep downhill 1000 m ahead. Please slow down.Long and steep downhill 500 m ahead. Please slow down.Long and steep downhill 1000 m ahead. Please slow down.
End of long and steep downhillLong and steep downhill 500 m ahead. Please slow down.
End of long and steep downhill

Exit aheadYou will get off the highway 500 m ahead. Please drive in the rightmost lane.Toll station 1000 m ahead. If you will get off the highway via this exit, please pay attention to rear vehicles and change lanes in advance.You will get off the highway 500 m ahead. Please drive in the rightmost lane.Toll station 1000 m ahead. If you will get off the highway via this exit, please pay attention to rear vehicles and change lanes in advance.
Please get off the highway via the exit with a speed limit of 40 km/hYou will get off the highway 500 m ahead. Please drive in the rightmost lane.

Service area aheadPlease get off the highway via the exit with a speed limit of 40 km/h
Service area 500 m aheadService area 1000 m aheadService area 500 m aheadService area 1000 m ahead
Arrival of service areaService area 500 m ahead
Arrival of service area

Traffic congestion aheadTraffic congestion 500 m ahead. Please slow down.Traffic congestion 1000 m ahead. The estimated passing time is X minutes. Please slow down.Traffic congestion 500 m ahead. Please slow down.Traffic congestion 1000 m ahead. The estimated passing time is X minutes. Please slow down.
Enter the congested section. The estimated passing time is X minutes.Traffic congestion 500 m ahead. Please slow down.
Enter the congested section. The estimated passing time is X minutes.

Static/slow vehicle warning aheadSlow vehicle 110 m ahead. Please drive carefully.Slow vehicle 250 m ahead. Please keep a safe distance or change the lane in advance.Slow vehicle 110 m ahead. Please drive carefully.Slow vehicle 250 m ahead. Please keep a safe distance or change the lane in advance.
Approaching slow vehicleSlow vehicle 110 m ahead. Please drive carefully.
Approaching slow vehicle