Transit VISA confusion

[Splurgenxs]

Traveling from India to Canada ...do i need to apply for a transit visa under DATV?

Or can i hop through Heathrow AT with a 5 hour layover without it?

What about Austria and Amsterdam? Please help




Edit: nvm, found older relevant topics

http://www.canadavisa.com/canada-immigration-discussion-board/-t172043.0.html