Congestion alleviation effect associated with the use of the ETC time zone discount system

2) Congestion alleviation effect associated with the use of the ETC discount system

2 May 6 (Sat) Tohoku Expressway Utsunomiya IC to Nishinasuno Shiobara IC (In-bound line)
(Congestion starting near the Yaita IC

• Compared to the same period in 2004, the daily traffic volume was almost the same, but the traffic congestion was greatly reduced.
  Maximum congestion length H16: 30.4km ⇒ H18: 14.7km (▲52%)
  Traffic congestion H16 year: 146.7km・hr ⇒ H18 year: 58.8km・hr (▲60%)
• Traffic distribution was seen as the traffic volume during the daytime congestion decreased from 2004, and the traffic volume increased from midnight to morning.
  Daily traffic H16: 46.7 thousand ⇒ H18: 47.3 thousand (+1%)
  Traffic volume from 0 to 4 o'clock H16: 3.3 thousand ⇒ H18: 4.1 thousand (+24%)
  Traffic volume from 16:00 to 21:00 H16: 126,000 units ⇒ H18: 11.6,000 units (▲8%)
  * "Traffic volume" is an index that indicates the size of traffic (congestion length x congestion time)
  *The comparison date was set to "May 4, 2004 (Tuesday)," when the traffic volume and traffic congestion were similar to that day.

Hourly traffic volume: Traffic volume data measured by vehicle detectors installed on Expressway