Constant-slope barrier
A constant slope barrier is a traffic barrier made of reinforced concrete and designed with a single slope that is used to separate lanes of vehicular traffic. Its advantages compared to more complex shapes arise because its performance is not as affected by changes in the height of the roadbed during repaving.
The Texas Constant-Slope Barrier is 1,070 mm (42 in) high and has a constant slope face that makes an angle of 10.8 degrees with respect to the vertical. California has developed a constant slope barrier with an angle of 9.1 degrees with respect to the vertical. The Texas Constant-Slope barrier has performed similarly in crash tests to the Jersey barrier. The California design compared similarly to the F-Shape barrier in crash tests.
References
- Basics of Concrete Barriers, by Charles F. McDevitt
- Basics of Concrete Barriers - Free Online Library, by Charles F. McDevitt
- v
- t
- e
Road hierarchy
| Limited-access |
|
|---|---|
| By country |
|
| Main roads | |
| Local roads |
|
| Other terms |
|
Interchanges (grade-separated) |
|
|---|---|
Intersections (at-grade) |
factors
| Road and environment | |
|---|---|
| Human factors | |
| Vehicles |
time allocation
- Barrier transfer machine
- Bicycle lane
- Climbing lane
- Complete streets
- Contraflow lane
- Contraflow lane reversal
- High-occupancy toll lane
- High-occupancy vehicle lane
- Lane
- Living street
- Managed lane
- Median / Central reservation
- Motorcycle lane
- Passing lane
- Pedestrian crossing
- Pedestrian zone
- Refuge island
- Reversible lane
- Road diet
- Road verge
- Runaway truck ramp
- Shared space
- Sidewalk / Pavement
- Shoulder
- Street running railway
- Traffic calming
- Traffic directionality
- Traffic island
- Traffic lanes
- Traffic signal preemption
- Truck bypass
- Unused highway
- Wide outside lane
- Woonerf
- Bollard
- Botts' dots
- Cable barrier
- Cat's eye (road)
- Concrete step barrier
- Constant-slope barrier
- Curb
- F-Shape barrier
- Guard rail
- Jersey barrier
- Kassel kerb
- Noise barrier
- Raised pavement marker
- Road surface marking
- Rumble strip
- Traffic barrier
- Traffic cone
indicators
