Effectiveness of Condition-Responsive Advisory Speed Messages in Rural Freeway Work Zones

2002 ◽  
Vol 1794 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Patrick T. McCoy ◽  
Geza Pesti
Keyword(s):  
Work Zones ◽  
Freeway Work Zones ◽  
Advisory Speed

scholarly journals Capacity of Freeway Work Zones in Germany

2016 ◽  
Vol 15 ◽  
pp. 233-244 ◽  
Author(s):  
Nina von der Heiden ◽  
Justin Geistefeldt
Keyword(s):  
Work Zones ◽  
Freeway Work Zones

Evaluation of variable advisory speed limits in congested work zones

2016 ◽  
Vol 9 (2) ◽  
pp. 123-145 ◽  
Author(s):  
Praveen Edara ◽  
Carlos Sun ◽  
Yi Hou
Keyword(s):  
Work Zones ◽  
Speed Limits ◽  
Advisory Speed

scholarly journals Modelling of Queue Length in Freeway Work Zones – Case Study Karaj-Tehran Freeway

2021 ◽  
Vol 33 (1) ◽  
pp. 49-59
Author(s):  
Mojtaba Mousazadeh Gilandeh ◽  
Sari Sharif Ali ◽  
Mohammad Javad Goodarzi ◽  
Nahid Amini ◽  
Hassan Latifi
Keyword(s):  
Flow Rate ◽  
Queue Length ◽  
Abrupt Change ◽  
Heavy Vehicles ◽  
Work Zones ◽  
Maintenance And Rehabilitation ◽  
Abrupt Changes ◽  
Queue Lengths ◽  
Freeway Work Zones

In this study, the traffic parameters were collected from three work zones in Iran in order to evaluate the queue length in the work zones. The work zones were observed at peak and non-peak hours. The results showed that abrupt changes in Freeway Free Speed (FFS) and arrival flow rate caused shockwaves and created a bottleneck in that section of the freeway. In addition, acceleration reduction, abrupt change in the shockwave speed, abrupt change in the arrival flow rate and increase in the percentage of heavy vehicles have led to extreme queue lengths and delay. It has been found that using daily traffic data for scheduling the maintenance and rehabilitation projects could diminish the queue length and delay. Also, by determining the bypass for heavy vehicles, the delay can be significantly reduced; by more than three times. Finally, three models have been presented for estimating the queue length in freeway work zones. Moreover, the procedure shown for creating a queue length model can be used for similar freeways.

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