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Posts Tagged ‘Arizona’

Racial Bias in Driver Yielding Behavior at Crosswalks

Friday, May 23rd, 2014
Figure 1: Number of cars that passed before pedestrian could cross (by pedestrian race)

PORTLAND STATE UNIVERSITY
UNIVERSITY OF ARIZONA
Minority pedestrians are more likely to be killed in a motor vehicle crash even after controlling for increased traffic exposure in urban areas, socioeconomic status, and alcohol use (CDC, 2013). One potential and unexplored contributing factor to these disparate outcomes is whether driver behavior differs toward pedestrians by race. Similar to other types of intergroup interactions, roadway interactions between drivers and pedestrians are likely influenced by drivers’ subtle racial attitudes and biases. The current study focuses on pedestrians’ street crossings, as pedestrians are most vulnerable when crossing traffic lanes.

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Arizona DOT: Making Roads out of Recycled Tires

Thursday, May 1st, 2014
Arizona DOT: Making Roads out of Recycled Tires

For over 25 years, ADOT has been using rubberized asphalt on the Arizona highway system. In addition to providing smoother and quieter rides for drivers, rubberized asphalt lasts longer and costs less. Another bonus is that ADOT has recycled more than 15 million tires over the years.Take a look at how it’s done.

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Campe Verde, AZ: What it Takes to Build a Climbing Lane

Monday, March 10th, 2014
Campe Verde, AZ: What it Takes to Build a Climbing Lane

Arizona DOT breaks it down by the numbers: the cost, time, dirt excavated and scheduled closures that go into creating a new climbing lane (for slower traffic going uphill) near Camp Verde, AZ.

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Phoenix, AZ: Measuring Fire Damage on Bridge Structures

Tuesday, February 25th, 2014
Phoenix, AZ: Measuring Fire Damage on Bridge Structures

ADOT uses their Mobile Incident Command Vehicle equipped with infrared cameras, as well as on-site engineers, to analyze a Phoenix bridge for signs of damage after a major fire in the vicinity.

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Tucson, AZ: Prince Road Update

Monday, November 25th, 2013
Tucson, AZ: Prince Road Update

The Prince Road project in Tucson is now in its final phase. To help get there, ADOT recently set 22-120 foot long girders over the Union Pacific Railroad. The challenge – lifting these 113-ton girders into place without affecting the 40-60 trains that go through that area each day.

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Arizona DOT: Know Snow

Tuesday, November 19th, 2013
Arizona DOT: Know Snow

“Ultimately, if you’re behind a plow, you’re going to get from point A to point B,” says snowplow driver Justen Williams.
The biggest challenge ADOT snowplow drivers face while plowing is other vehicles. If you find yourself near an active plow, the safest place for you to be is at least 50 feet behind it. Let the plow clear the road ahead before you drive on it.
- ArizonaDOT on YouTube

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Arizona DOT: Archeological Survey Before Construction

Monday, October 21st, 2013
Arizona DOT: Archeological Survey Before Construction

Prior to any sort of construction, ADOT must complete environmental surveys of the entire project area. Right now, ADOT is evaluating the US 89 project area to see if there are any archaeologically significant sites in the right of way. -ArizonaDOT on YouTube

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Bylas, AZ: Gila River Bridge

Wednesday, March 27th, 2013

The US 70 Gila River Bridge near Bylas, Arizona is the state’s fourth longest bridge, measuring 1,829 feet in length. ADOT has replaced the original bridge, built in 1957, with a new bridge. The $12.7 million project features wider travel lanes, emergency shoulders and a pedestrian walkway. – ArizonaDOT on YouTube

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Page, AZ: US 89 Pavement Buckle

Monday, February 25th, 2013

- ArizonaDOT on YouTube

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Arizona DOT: Building A Freeway – Prestressed Box Girders

Monday, January 21st, 2013

Prestressed box girder: a beam made from concrete and steel; prestressed within its elastic limit to counteract stresses that occur under the bridge’s load. Girder size depends on the unique design of a bridge. These girders are 96 feet long and weight 93,000 pounds.

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