TY  - JOUR
PY  - 1973//
TI  - Ramp control to relieve freeway congestion caused by traffic disturbances
JO  - Highway research record
A1  - Payne, Harold J.
A1  - Meisel, William S.
A1  - Teener, Michael D.
SP  - 52
EP  - 64
VL  - 469
IS  - 
N2  - Systems have been installed in several cities in the united states, including los angeles, which allow the control of ramp signal lights from a central location. Time-of-day ramp volume schedules have been used with some success. This paper examines a class of traffic-responsive ramp control algorithms for adjusting ramp volumes in response to traffic disturbances, e.G., congestion resulting from lane blockages. A large number of traffic-responsive ramp control plans are considered. Each plan is evaluated in terms of freeway service (vehicle-miles) and delay (vehicle-hours) over a fixed control period by simulating the response of traffic to a lane blockage on a macroscopic model of freeway traffic. The result of the analysis is a set of ramp control plans, each of which yields minimum delay for a specified level of freeway service. The performance measures associated with these plans are plotted against one another, yielding a trade-off curve for final selection of a ramp metering plan.<p /> <p>Language: en</p>
LA  - en
SN  - 0073-2206
UR  - http://dx.doi.org/
ID  - ref1
ER  -