@article{ref1,
title="Vehicle crash tests of concrete median barrier retrofitted with slipformed concrete glare screen",
journal="Transportation research record",
year="1993",
author="Rowhani, Payam and Glauz, Doran and Stoughton, Roger L.",
volume="1419",
number="",
pages="35-42",
abstract="Two vehicle crash tests were performed on a retrofit concrete glare screen (CGS) slipformed on top of an existing concrete safety shape barrier 0.81 m (32 in.) high. The CGS is intended as a replacement for the current standard expanded metal mesh glare screen. This CGS is 0.51 m (20 in.) high, 0.15 m (6 in.) thick at the base, and tapers slightly to 0.13 m (5 in.) thick at the top. Reinforcing consists of two longitudinal #4 bars tied to vertical #5 hoops (inverted U-shaped stirrups). At the base of the glare screen is a 19-mm (3.4-in.) chamfer to match that at the top of the concrete barrier. The two test vehicles included a pickup truck ballasted to 2447 kg (5,390 lb) traveling 89 km/hr (55.3 mph) and impacting at 20 degrees; and a station wagon ballasted to 1979 kg (4,360 lb), traveling 90 km/hr (56.2 mph) and impacting at 25 degrees. Both tests showed that a CGS can successfully withstand the impact of both a pickup truck and a heavy passenger car, and satisfy the requirements for structural adequacy, occupant risk and vehicle trajectory in &quot;NCHRP Report 230&quot; under these impact conditions. Maintenance costs for the CGS should be less than those for the metal mesh glare screen.     Record URL:        http://onlinepubs.trb.org/Onlinepubs/trr/1993/1419/1419-004.pdf<p /><p>Language: en</p>",
language="en",
issn="0361-1981",
doi="",
url="http://dx.doi.org/"
}