Camel road sign, Wahiba, Oman, Middle East

Decorated Tata truck at Rasulpura in Sawai Madhopur, Rajasthan, Northern India

Pedestrians In Road Ahead warning sign by the road in Oxfordshire, United Kingdom

Car passes Accompanied horses or ponies warning sign by roadside, Dorset, UK

A truck heading into Taroudannt province, on a mountain road in the Atlas mountains of Morocco, North Africa, Africa

CCTV in a hotel car park warning sign, Leicester, Leicestershire, England, United Kingdom, Europe

A man holds up a toad flattened by a car next to a Toad crossing warning sign on a road near Stocks Reservoir in Lancashire, England, United Kingdom, Europe

A road warning sign of slippery conditions, England, United Kingdom, Europe

A Toad crossing warning sign on a road near Stocks Reservoir in Lancashire, England, United Kingdom, Europe

A man holds up a toad flattened by a car next to a Toad crossing warning sign on a road near Stocks Reservoir in Lancashire, England, United Kingdom, Europe

A school sign and speed limit sign in Berrynarbor, Devon, England, United Kingdom, Europe

Wind vane, radioactivity warning sign, radioactive cloud, montage

Warning sign warning of camels in desert, Essendilene, Algeria, Africa

Elephants warning sign on a roadside, on the road to Brandberg Mountain, Damaraland; Kunene Region, Namibia

Back end of tractor carrying a load of harvested cornstalks (Zea Mays) on a highway driving through the countryside; Yarrow, British Columbia, Canada

Warthog warning sign; Namibia

Railway traffic sign beside a desert road, Garub namibia

Elephants warning sign on a roadside; Namibia