Visibility and Speed Estimation of Iowa State Highway Commission Snowplows, HR-174, 1975

Many accidents involving Iowa snowplows have happened in recent years. This study investigated the influence of time of day, sex of subject, type of snowplow sign and snowplow speed on the criteria of oncoming driver reaction time and his estimate of snowplow speed. Film strips were made of a car passing a snow-Plow under various experimental conditions. These experimental movie strips were viewed in the laboratory by college student drivers who were asked to indicate their reaction time to slow down and to estimate the speed of the snowplow being passed. The generally best sign condition for the snowplow was to have a striped rear sign and a speed-proportional flashing light in addition to the standard rotating beacon on top of the truck. Several recommendations were made.

Dedicated to Better and Safer Highways, Iowa State Highway Commission, July 1973

The planning, construction and maintenance of its highways is the state's second highest business, next only to education. Of the nearly 113,090 miles of roads and streets in Iowa, the 10,271 miles in the Interstate and primary system are the direct responsibility of the Highway Commission.From its central headquarters in Ames, the Commission coordinates its statewide activities through facilities located in each of the 99 counties. These include six district offices, 47 resident offices and 165 maintenance garages.

Utility accommodation policy of the Iowa State Highway Commission, 1970

This policy covers initial placement, adjustment, relocation and replacement of utility facilities in, on, above or below all highway right of way over which the Iowa State Highway Commission exercises control of access. It embodies the basic specifications and standards needed, to insure the safety of the highway user and the integrity of the highway.

Utility accommodation policy of the Iowa State Highway Commission, 1973

This policy covers initial placement, adjustment, relocation and replacement of utility facilities in, on, above or below all highway right of way over which the Iowa State Highway Commission exercises control of access. It embodies the basic specifications and standards needed, to insure the safety of the highway user and the integrity of the highway. (1973 revision to 1970 policy.)

Annual report of the proceedings and decisions of the State Tax Commission of Missouri.

Title varies slightly.

Biennial report of the Utah State Tax Commission.

Mode of access: Internet.

The work of the State Tax Commission in the cause of equal taxation,

Mode of access: Internet.

Report of the State tax commission.

Succeeded by its Annual report, 1st- , 1918-

Biennial report of the State Tax Commission.

Title varies slightly.

Biennial report of the Missouri State Tax Commission to the ... General Assembly.

Some reports are found also in the Appendix to the House and Senate journals of the General Assembly.

Report of the State Tax Commission of the State of Mississippi on assessments for the tax year ...

Title from cover.

Special report of the State Tax Commission.

Includes bibliographies.

Annual report of the New Hampsire State Tax Commission.

Report year ends Dec. 31.

Biennial report of the State Tax Commission of Maryland.

Mode of access: Internet.

Annual report of the State Tax Commission.

Reports for 1938-1958/59 form pt. I of the Annual report of the Dept. of Taxation and Finance.