To make drivers slow down for animals, this road 'turns red'

When a highway through the forests of a tiger reserve in Madhya Pradesh went from two-lane to four-lane, traffic volumes and speeds. How would animals crossing the roads be protected?

To make drivers slow down for animals, this road 'turns red'
When a highway through the forests of a tiger reserve in Madhya Pradesh went from two-lane to four-lane, traffic volumes and speeds. How would animals crossing the roads be protected?