Signs with incorrect (inflated) elevation - Khardungla Pass - Ladakh (India)
The actual elevation of the pass is 5,359 m (17,582 ft), not 5,602 m (18,380 ft) as indicated on the signs. And it is not the highest motorable pass, but it's still pretty damn high.
For more information about the Khardungla Pass, read the Wikipedia article: en.wikipedia.org/wiki/Khardung_La