Guardian 5 (G5) Longitudinal Barrier
Guardian 5 (G5) is a MASH TL-5 longitudinal median barrier designed to safely capture and redirect a fully loaded 80,000 lb. vehicle. It is intended for use on roadways with high truck traffic where drainage is a concern and as bridge pier protection. G5 is a softer, safer, more cost-effective alternative to concrete barriers and meets all MASH TL-5 standards.
Our highway road safety barriers are strong, long-lasting, and easy to install. And when you partner with Gregory Highway—the national leader in highway guardrails and roadside safety—you will always get a quick turnaround and responsive service.
G5 Features
- Meets MASH TL-5 standards
- Used for roadside or median applications
- Bi-directional median or longitudinal barrier
- Galvanized, high strength steel construction
- Direct driven in standard AASHTO strong soils
- Maximum dynamic deflection of 4’4”
- Working width of 5’5”
- Easy to install with standard equipment
- Integrated anchorage system within the length of barrier
- Open-bottom design allows for drainage and easy snow removal
- Common rail profiles are quickly replaceable after impact
- Transitions to standard AASHTO W-Beam or Thrie-Beam
Simulations for Specific Roadway Applications
- Reduced post spacing
- Higher impact speeds
- Use with curbing
- Use with glare screening
- Direct transition to Ontario shape concrete median barrier
- Analysis of impact envelop; tractor vs. trailer
|
Test Level |
Vehicle Type |
Mass |
Speed |
Angle |
Impact Energy |
|||
|
MASH |
|
Kg |
Lb |
Km/h |
MPH |
|
kJ |
Kip-ft |
|
Test 5-12 |
Tractor Truck |
36,000 |
79,400 |
80 |
50 |
15° |
595 |
~440 |
|
Test 5-11 |
Pickup Truck |
2,270 |
5,000 |
100 |
62 |
25° |
156 |
~116 |
|
Test 5-10 |
Small Car |
1,100 |
2,425 |
100 |
62 |
25° |
75 |
~56 |
