Gore

Gore

Economic analysis of highway safety improvements

Published in Zongzhi Li, Transportation Asset Management, 2018

Intersection channelization: Using hard islands, gore areas, and clear striping, 3-legged and 4-legged intersections should be channelized to make drivers aware of the permitted and restricted areas. This would help avoid conflicts of right and left turns with through traffic movements well before they get close to the intersection.

Macroscopic traffic flow changes around ramps

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Journal Information

Published in Transportmetrica A: Transport Science, 2018

Aries van Beinum, Marco Hovenga, Victor Knoop, Haneen Farah, Fred Wegman, Serge Hoogendoorn

The actions of individual merging or diverging vehicles create turbulence near the ramp. The ramp influence area experiences a higher rate of lane changing than is normally present on ramp-free sections of a motorway (HCM 2010). Thus, the Level of Turbulence is expected to increase before (upstream of) and to decrease after (downstream of) a ramp. Kondyli and Elefteriadou (2012) found that turbulence due to merging manoeuvres begins 110 m upstream of the gore. The gore is the painted white triangle which indicates that the road splits or merges. The default design of a motorway interchange is shown in Figure 1. According to the HCM (2010), the merge influence area occurs between approximately 460 m (1500 ft.) upstream and 460 m downstream of the gore. To the best of our knowledge, other literature that describes the start or the end of a raised level of turbulent traffic is not available.

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Economic analysis of highway safety improvements

Macroscopic traffic flow changes around ramps