How Your Transponder Works
The automated system is easy to use. When
you drive up to and stop in front of a gate, the antenna
will send a signal to your transponder
which will cause the gate arm to rise. You do
not need to leave your vehicle or even roll down
your window. You will have to stop in front of
the gate within range of the antenna. Once the system
verifies your permit is valid, the gate will rise and
you are free to park in any open, non-reserved,
space in the lot. If you have multiple vehicles, you
may choose to move the transponder from car to
car or you may
choose to purchase an additional transponder.
are available for $40. You will need to use
your transponder to enter or exit a parking lot on
campus 24 hours a day, 7 days a week
Monday - Thursday:
Lots M, N, O and P transponders have access to Lots E
and G after 4:30pm and access to Lots B, C, D, H and I
after 7:30pm. No access to Lot A or the Stadium Underground or metered parking lots (F, J or Q).
Lots B, C, D, E, G, H, I, K and Ward transponders have
access to other Main Campus lots after 4:30pm. No access to Lot A or the Stadium Underground or metered parking lots (F, J or Q).
Stadium transponders have access to other Main Campus lots after 4:30pm.
No access to Lot A or metered parking lots (F, J or Q).
Friday and Weekends:
From Friday after 3:30pm until Monday at 7:30am, all transponders
have access to Main Campus Lots, with the above exceptions.
Summer Interzone Hours
From May 1st to August 31st West Campus permit holders have access to Lots D,E,G,H,I and Stadium after 4:30pm, as well as access to Lots B & C after 7:30pm. No access to Lot A or metered parking lots (F,J,Q)
All transponder holders must be back in their assigned lot
by 7:30am on a weekday morning or they will be required to pay for parking at the visitor rate.
Where To Position The Transponder
The manufacturer recommends that the transponder is
affixed to your vehicle's windshield behind the rear view mirror.
Please refer to this guide.
Electronic signage will indicate parking available to
transponder group and visitor group. The LED indicator
next to either group will indicate if the lot is open or full.
If the LED indicator reads "open", you may proceed into
the lot. If the LED indicator reads "full", you must find an
alternate lot, as the lot is full and the gate arm will not
rise to admit you when you approach the gate.
What Is AntiPassBack?
The AntiPassBack feature for automated parking
ensures that only one vehicle may use a transponder
at a time. This means that once the system recognizes
a transponder upon entry, the system will NOT recognize the
same transponder for another car entry (and vice-versa
for exiting). This prevents multiple vehicles from 'sharing' a single transponder to avoid paying for parking.
It also prevents customers from using their transponder to exit the lot during interzone hours if they did not use it to enter the lot.
Transponder holders must not (even in
good faith) use their transponder to allow another car
entry or exit.
If is your responsibility to be aware of the expiry date
of your transponder and to renew it as needed prior to
the expiry date. The day after expiry, the transponder
will be rendered inactive and will not work at the gate.
In this situation, you will need to pay for parking as a
daily visitor until you have renewed your parking with
the parking office.
Questions or problems?
Each gate and validation machine is equipped with
an intercom which is staffed full time. Our staff will
do their best to ensure your problems are resolved
quickly and easily. When contacting the parking office
or using the HELP button, be sure you have the unique
6 digit number on your transponder handy. As well,
each system has closed circuit television feeds which
are monitored 24 hours a day by McMaster Security
Additional information may be found on our
What To Do If Your Transponder
If your transponder does not work the first time you use
it, try these tips:
- Ensure the transponder is in direct sight of the
antenna (the gray box mounted at top of a pole)
with the suction cup facing the antenna and that it is not being blocked by anything
- Change the placement of the transponder on the
- Move the vehicle forward toward the gate (your
vehicle may be too far away for the sensor to
read the transponder) or reverse away from the
gate if it is safe to do so (your vehicle may be
If the gate arm does not rise, use the HELP button
for assistance. Be sure to have the unique 1 – 5
digit number on your transponder handy. You may be
required to attend the parking office if there is a defect
with the transponder.
What To Do If Your Transponder
Is Lost or Stolen
If your transponder is lost, stolen, broken, or otherwise
rendered inoperative, attend the parking office as soon
as possible and they will be able to issue you a new
transponder. Replacement transponders carry a fee of
$40. Lost, stolen, or inoperative transponder will be
electronically disabled and will no longer work at the