Linking Ramp Metering and Variable Highway Speed Limits

McCabe, Keith; Charton, Thomas; Riley, A. D.; White, Joanna

doi:10.3182/20060829-3-nl-2908.00052

Cited by 1 publication

(1 citation statement)

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“…Dynamic merge control is a practical approach to handling varying traffic demand on the main lanes and the merge lanes to effectively utilize existing capacity. For instance, the installation of variable speed limits (VSL) activated before merging sections resulted in smoother traffic flows and a reduction of shockwaves (Mccabe, Charton, Riley, & White, 2006;Soriguera, Martínez, Sala, & Menéndez, 2017). Several studies confirm that implementing VSL before merging sections improves the traffic situation compared to applying ramp metering only (Carlson, Papamichail, Papageorgiou, & Messmer, 2010;Xiao-Yun Lu, Qiu, Varaiya, Horowitz, & Shladover, 2014).…”

Section: Dynamic Merge Controlmentioning

confidence: 99%

The effect of pavement markings on driving behaviour in curves: a simulator study

et al. 2016

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This study investigates the effect of two pavement markings (transverse rumble strips (TRS) and a backward pointing herringbone pattern (HP)) on speed and lateral control in and nearby curves. Two real-world curves with strong indications of a safety problem were replicated as realistic as possible in the simulator. Results show that both speed and lateral control differ between the curves. These behavioural differences are probably due to curve-related dissimilarities with respect to geometric alignment, cross-sectional design and speed limit. TRS and HP both influenced mean speed and mean acceleration/deceleration but not lateral control. TRS generated an earlier and more stable speed reduction than HP which induced significant speed reductions along the curve. The TRS gives drivers more time to generate the right expectations about the upcoming curve. When accidents occur primarily near the curve entry, TRS is recommended. The HP has the potential to reduce accidents at the curve end. Practitioner Summary: Two pavement markings (transversal rumble strips and HP) nearby dangerous curves were investigated in the driving simulator. TRS generated an earlier and more stable speed reduction than HP which induced speed reductions along the curve. The TRS gives drivers more time to generate right expectations about the upcoming curve.

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