Nya kövarningsskyltar längs E6 genom Göteborg: resultat av utvärderingsintervjuer
2002 (Swedish)Report (Other (popular science, discussion, etc.))
A before-after study was carried out to provide some data on the
effectiveness of new, computer
controlled LED-equipped traffic signs, warning for congested traffic. Data
were collected through
telephone interviews with drivers who had been observed driving in the
specially signed road
section the morning of the same day when the interview was made. 203
interviews were made in
the "before" period, and 224 in the "after" period, i.e. after the new sign
system had been installed.
Various methodological problems indicate the need for a certain caution in
the overall results indicate that most of the drivers in the "after" period
had seen the new signs and
that most of them also interpreted the signs correctly. In spite of this
finding the reported
behavioural effects are practically non-existent.
The interview included opportunities for spontaneous comments and several
drivers pointed out
that the message from, or function of, the new signs did not seem very
reliable to them.
Some data, giving a more general overview of the morning traffic towards
Gothenburg, are also
Place, publisher, year, edition, pages
Linköping: Statens väg- och transportforskningsinstitut., VTI notat 1-2002 , 2002.
Swedish, Sweden, Congestion, Queue, Warning, Variable message sign, Change, Before and after study, Interview, Driver, Attitude, Visibility, Comprehension
Research subject Road: Traffic engineering, Road: Traffic control and traffic information; Road: Traffic engineering, Road: Traffic measurement and traffic analysis
IdentifiersURN: urn:nbn:se:vti:diva-1394OAI: oai:DiVA.org:vti-1394DiVA: diva2:670104