When you activate this feature a notify button will appear for each prediction. You select the number of minutes and click the notify button. When the bus reaches that number of minutes to your stop you will receive a notification. Web notifications will be updated with the latest prediction until it is closed or the vehicle arrives. For Premium users and routes with premium features the Monitor option will show the next vehicle's prediction until the notification is closed, even if a vehicle arrives.
To enable TransSee notifications you have to do a one time set up.
Settings (enable more features)
Stops near me by GPS going North East South West
TransSee by Darwin O'Connor. Follow on Twitter.