Q 01/05

From the 1920s until a 1954 rule change, American stop signs had a background of which color?

A) White

B) Yellow

C) Orange

D) Green

Answer · why

B) Yellow

Yellow was chosen because no red material of the day could resist fading in the sun. The 1954 national sign manual finally switched the stop sign to w...

Q 02/05

Which country switched from driving on the left to the right overnight on "Dagen H" in September 1967?

A) Finland

B) Denmark

C) Sweden

D) Netherlands

Answer · why

C) Sweden

Sweden cleared its roads of all non-essential traffic in the early hours of a Sunday to make the change. In a 1955 referendum, 83 percent of voters ha...

Q 03/05

A highway off-ramp passes straight through three floors of the Gate Tower Building in which Japanese city?

A) Tokyo

B) Nagoya

C) Yokohama

D) Osaka

Answer · why

D) Osaka

Osaka got its drive-through office block after the landowners refused to sell and negotiated for about five years. The elevator skips from floor 4 to ...

Q 04/05

The Darién Gap, the only break in the Pan-American Highway, lies on Panama's border with which country?

A) Colombia

B) Costa Rica

C) Venezuela

D) Ecuador

Answer · why

A) Colombia

Colombia begins on the far side of a roadless rainforest: the highway stops at Yaviza in Panama and resumes about 66 miles away at the port of Turbo.

Q 05/05

Which country's Highway 1, a loop of about 14,500 km around its coast, is the world's longest national highway?

A) Canada

B) South Africa

C) Russia

D) Australia

Answer · why

D) Australia

Australia's Highway 1 joins every mainland state capital, though it misses the national capital, Canberra. It outruns the Trans-Siberian Highway by mo...