Close Slip Lane
Intersection Reconstruction and Tightening
INTERSECTIONS & ROADWAYS INTERSECTIONS & ROADWAYS
Close Slip Lane
Modifies the corner of an intersection to remove the sweeping right turn lane for vehicles . Results in shorter crossings for pedestrians , reduced speed for turning vehicles , better sight lines , and space for landscaping and other amenities .
Cost $$$
Intersection Reconstruction and Tightening
Intersections that intersect at a skewed angle or angle notably different than 90-degrees have a greater likelihood of collisions . Squaring up the intersection helps reduce the likelihood of collisions . “ Squaring up ” an intersection as close to 90 degrees as possible involves intersection reconstruction and approach realignment to provide better visibility for all road users , also reducing high speed turns , reducing length exposure for vehicles and / or bikes passing through the intersection , and reducing pedestrian crossing length .
Cost $$$
Low Cost / Quick Build alternative available
Relevant Crash Types Right Turns at Signalized Intersections Pedestrians at Signalized Intersections Bicyclists at Signalized Intersections
Safe System Hierarchy |
Tier 1 |
Tier 2 |
Tier 3 |
Tier 4 |
Remove Severe Conflicts |
Reduce Vehicle Speeds |
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Relevant Crash Types Rear-End Right Turns at Signalized Intersections Speed Management Pedestrians at Signalized Intersections
Safe System Hierarchy |
Tier 1 |
Tier 2 |
Tier 3 |
Tier 4 |
Remove Severe Conflicts |
Reduce Vehicle Speeds |
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Increase Attentiveness and Awareness |
APPENDIX B : COUNTERMEASURES TOOLBOX B-12