If you pass a parked vehicle in the same line, is that considered splitting/filtering??
It is considered filtering under the vernacular understanding. The HTA doesn't in any instance use the word "filter" or the term "lane splitting". However the HTA DOES explicitly allow this act you have described.
Please also note the vernacular term "filtering" does also include passing between cars in their lane as they are moving at slow speeds as well as completely stopped.
However this aspect of "filtering" is extremely difficult to justify as "safe" considering other clauses in the HTA and is actually illegal (unless to the left in single lane (either direction) traffic).
Though the HTA allows for passing in the same lane in some circumstances, this requires the car being passed to have turned out to either the left or right of the lane, and provide as much room as possible.
I would not suggest that the full meaning of the term "filtering" is legal in Ontario. Additionally passing, whether in the same lane or in an entire lane next to another (approaching) vehicle within 30 m of a pedestrian crossing is also illegal.
I would say passing a moving vehicle in the same lane is extremely limited in application.
HTA references:
Passing in the same lane to the left (slow moving vehicle):
148.<!-- TRANSIT - HYPERLINK --><!-- .http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s148s1. --> (1) Every person in charge of a vehicle on a highway meeting another vehicle shall turn out to the right from the centre of the roadway, allowing the other vehicle one-half of the roadway free. R.S.O. 1990, c. H.8, s. 148 (1).
Vehicles or equestrians overtaken
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s148s2. -->
(2) Every person in charge of a vehicle or on horseback on a highway who is overtaken by a vehicle or equestrian travelling at a greater speed shall turn out to the right and allow the overtaking vehicle or equestrian to pass. R.S.O. 1990, c. H.8, s. 148 (2).
Exception
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s148s3. -->
(3) Subsections (1) and (2) do not apply to a person in charge of a road service vehicle or a road-building machine or apparatus while the machine or apparatus is engaged in the construction of a highway. R.S.O. 1990, c. H.8, s. 148 (3).
Vehicles meeting bicycles
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s148s4. -->
(4) Every person in charge of a vehicle on a highway meeting a person travelling on a bicycle shall allow the cyclist sufficient room on the roadway to pass. R.S.O. 1990, c. H.8, s. 148 (4).
Vehicles or equestrians overtaking others
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s148s5. -->
(5) Every person in charge of a vehicle or on horseback on a highway who is overtaking another vehicle or equestrian shall turn out to the left so far as may be necessary to avoid a collision with the vehicle or equestrian overtaken, and the person overtaken is not required to leave more than one-half of the roadway free. R.S.O. 1990, c. H.8, s. 148 (5).
Bicycles overtaken
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s148s6. -->
(6) Every person on a bicycle or motor assisted bicycle who is overtaken by a vehicle or equestrian travelling at a greater speed shall turn out to the right and allow the vehicle or equestrian to pass and the vehicle or equestrian overtaking shall turn out to the left so far as may be necessary to avoid a collision. R.S.O. 1990, c. H.8, s. 148 (6).
Driver unable to turn out is to stop
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s148s7. -->
(7) Where one vehicle is met or overtaken by another, if by reason of the weight of the load on either of the vehicles so meeting or on the vehicle so overtaken the driver finds it impracticable to turn out, he or she shall immediately stop, and, if necessary for the safety of the other vehicle and if required so to do, he or she shall assist the person in charge thereof to pass without damage. R.S.O. 1990, c. H.8, s. 148 (7).
Passing vehicle going in same direction
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s148s8. -->
(8) No person in charge of a vehicle shall pass or attempt to pass another vehicle going in the same direction on a highway unless the roadway,
(a) in front of and to the left of the vehicle to be passed is safely free from approaching traffic; and
(b) to the left of the vehicle passing or attempting to pass is safely free from overtaking traffic. R.S.O. 1990, c. H.8, s. 148 (8).
Passing within 30 m of a pedestrian crossing:
Pedestrian crossover, duties of driver
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s140s1. -->
140.<!-- TRANSIT - HYPERLINK --><!-- .
http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s140s1. -->
(1) Subject to subsection (2), when a pedestrian or a person in a wheelchair crossing a roadway within a pedestrian crossover,
(a) is upon the half of the roadway upon which a vehicle or street car is travelling; or
(b) is upon half of the roadway and is approaching the other half of the roadway on which a vehicle or street car is approaching so closely to the pedestrian crossover as to endanger him or her,
the driver of the vehicle or street car shall yield the right of way to the pedestrian or a person in a wheelchair by slowing down or stopping if necessary. R.S.O. 1990, c. H.8, s. 140 (1).
Where vehicle stopped at pedestrian crossover
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s140s2. -->
(2) When a vehicle or street car is stopped at a pedestrian crossover, the driver of any other vehicle or street car overtaking the stopped vehicle or street car shall bring the vehicle or street car to a full stop before entering the crossover and shall yield the right of way to a pedestrian or a person in a wheelchair,
(a) who is within the crossover upon the half of the roadway upon which the vehicle or street car is stopped; or
(b) who is within the crossover and is approaching the half of the roadway from the other half of the roadway so closely to the vehicle or street car that he or she is in danger if the vehicle or street car were to proceed. R.S.O. 1990, c. H.8, s. 140 (2).
Passing moving vehicles within 30 metres of pedestrian crossover
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http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s140s3. -->
(3) When a vehicle or street car is approaching a pedestrian crossover and is within 30 metres thereof, the driver of any other vehicle or street car approaching from the rear shall not allow the front extremity of his or her vehicle or streetcar to pass beyond the front extremity of the other vehicle or street car. R.S.O. 1990, c. H.8, s. 140 (3).
Here is why you cannot "filter" between 2 lanes of (even) slow moving traffic (forget about "splitting"):
Passing vehicle going in same direction
148 <!-- TRANSIT - HYPERLINK --><!-- .http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s148s8. -->(8) No person in charge of a vehicle shall pass or attempt to pass another vehicle going in the same direction on a highway unless the roadway,
(a) in front of and to the left of the vehicle to be passed is safely free from approaching traffic; and
(b) to the left of the vehicle passing or attempting to pass is safely free from overtaking traffic. R.S.O. 1990, c. H.8, s. 148 (8).
If traffic to the left lane of the filtering motorcycle is stopped, then it is not overtaking! But if it is moving the Justice and cop will see it as "overtaking traffic". My advice, if one is willing to risk "filtering" is to slot into an open spot in traffic before the light turns green and traffic begins to move again. Don't get greedy, you don't need to make it all the way to the front of the line. Spot an opening and slot in when you can.
And for those thinking they are entitled to open the door or attempt to block another vehicle:
Opening of doors of motor vehicles
<!-- TRANSIT - HYPERLINK --><!-- .http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s165. -->165. No person shall,
(a) open the door of a motor vehicle on a highway without first taking due precautions to ensure that his or her act will not interfere with the movement of or endanger any other person or vehicle; or
(b) leave a door of a motor vehicle on a highway open on the side of the vehicle available to moving traffic for a period of time longer than is necessary to load or unload passengers. R.S.O. 1990, c. H.8, s. 165.
142.<!-- TRANSIT - HYPERLINK --><!-- .http://www.e-laws.gov.on.ca/html/statutes/french/elaws_statutes_90h08_f.htm#s142s1. --> (1) The driver or operator of a vehicle upon a highway
before turning to the left or right at any intersection or into a private road or driveway or from one lane for traffic to another lane for traffic or to leave the roadway shall first see that the movement can be made in safety, and if the operation of any other vehicle may be affected by the movement shall give a signal plainly visible to the driver or operator of the other vehicle of the intention to make the movement. R.S.O. 1990, c. H.8, s. 142 (1).