BPOC · Chapter 22Study guide

Traffic Code and Crash Investigations.

This chapter covers what a Texas peace officer must know about traffic Code and Crash Investigations, along with the statute limits that shape each element, at the level of detail the TCOLE tests.

Start the guide ↓Jump to practice questions ↓

Study guide

Chapter 22 study guide.

3 of 38 objectives free

This chapter is the Transportation Code from the patrol officer’s seat. It starts with definitions, because almost every traffic offense turns on a defined word such as vehicle, highway, roadway or operator. It then walks through licensing, signs and signals, the rules of the road in Chapter 545, equipment, registration, insurance and implied consent, and ends with crash investigation and traffic direction.

Study it in layers. Learn the definitions first. Then learn the numbers, because distances, speeds, ages and fine ranges are the easiest facts to test. For the crash and traffic direction objectives, learn the order of the steps: protect the scene, care for the injured, then investigate.

Jump to an objective38

LO 22.1

Vehicle definitions

Section 541.201 defines the kinds of vehicles the traffic laws apply to. The widest term is vehicle: a device that can be used to transport or draw persons or property on a highway. A motor vehicle is a self-propelled vehicle, or one propelled by electric power from overhead trolley wires. An electric bicycle and an electric personal assistive mobility device are not motor vehicles.

Several definitions turn on a number. A bus is designed for more than 10 passengers, including the operator. A passenger car is designed for 10 or fewer. A light truck has a rated carrying capacity of 2,000 pounds or less. A moped cannot go faster than 30 miles per hour and, if it has an internal combustion engine, has a piston displacement of 50 cubic centimeters or less.

An authorized emergency vehicle includes fire department and police vehicles, licensed ambulances, and the private vehicle of a volunteer firefighter or certified emergency medical services employee or volunteer when responding to a fire alarm or medical emergency. Sections 541.202 and 541.203 add the rail terms (railroad, railroad train, streetcar) and equipment terms such as muffler and metal tire.

Vehicle: A device that can be used to transport or draw persons or property on a highway.
Motor vehicle: A self-propelled vehicle, or a vehicle propelled by electric power from overhead trolley wires. Does not include an electric bicycle or an electric personal assistive mobility device.
Bicycle: A device, excluding a moped, capable of being ridden solely using human power, with two tandem wheels or three wheels and at least one wheel more than 14 inches in diameter, or any number of wheels with adaptive technology for a rider with a disability.
Bus: A motor vehicle used to transport persons and designed for more than 10 passengers, including the operator, or a motor vehicle other than a taxicab designed and used to transport persons for compensation.
Passenger car: A motor vehicle, other than a motorcycle, used to transport persons and designed for 10 or fewer passengers, including the operator.
Light truck: A truck, including a pickup, panel delivery truck or carryall, with a manufacturer’s rated carrying capacity of 2,000 pounds or less.
Motorcycle: A motor vehicle, other than a tractor or moped, equipped with a rider’s saddle and designed to have not more than three wheels on the ground.
Moped: A motor vehicle with a rider’s saddle and not more than three wheels on the ground that cannot exceed 30 miles per hour, with an engine of not more than five-brake horsepower.
Police vehicle: A vehicle used by a peace officer for law enforcement purposes that is owned or leased by a governmental entity, by certain private university police departments, or is the officer’s private vehicle approved by the agency head.
School bus: A motor vehicle built to the federal school bus safety standards and used to transport pre-primary, primary or secondary students to or from school or on a school-related activity trip.
Truck: A motor vehicle designed, used or maintained primarily to transport property.
Trailer and semitrailer: Both are designed to be drawn by a motor vehicle. A trailer carries its own weight. A semitrailer rests part of its weight and load on another vehicle.

Statutes and cases

Transportation Code Sec. 541.201 · Vehicles
Defines the vehicle types used throughout the traffic laws, from authorized emergency vehicle to vehicle.
Transportation Code Sec. 541.202 · Rail Transportation
Defines railroad, railroad train and streetcar. A streetcar runs on rails located primarily within a municipality.
Transportation Code Sec. 541.203 · Equipment
Defines equipment terms including exhaust emission system, metal tire and muffler.

On the exam Watch the passenger counts: more than 10 makes a bus, 10 or fewer makes a passenger car, and both counts include the operator.

Fill in the blank

A bus is a motor vehicle designed to accommodate more than passengers, including the operator.
A light truck has a manufacturer’s rated carrying capacity of pounds or less.
A moped cannot attain a speed of more than miles per hour.

LO 22.2

Persons, authorities and districts

Section 541.001 defines the people in a traffic case. The operator is the person who drives or has physical control of a vehicle. The owner is a person with a property interest in or title to the vehicle. A pedestrian is a person on foot. A school crossing guard is a responsible person at least 18 years of age, designated by a local authority to direct traffic in a school crossing zone.

Section 541.002 defines the governmental terms. Department means the Department of Public Safety. A local authority is a county, municipality or other local entity authorized to enact traffic laws, and a school district only when it is designating school crossing guards. A police officer is an officer authorized to direct traffic or arrest persons who violate traffic regulations.

Districts matter because speed and parking rules depend on them. A business district has business or industrial buildings occupying at least 300 feet of frontage within a 600-foot segment of highway. A residence district has at least 300 feet of frontage primarily improved with residences. A metropolitan area contains at least one municipality with a population of at least 100,000.

The outline also pulls five Penal Code definitions into this chapter because crash and hit-and-run penalties depend on them: bodily injury, serious bodily injury, individual, public place and death.

Operator: A person who drives or has physical control of a vehicle.
Owner: A person who has a property interest in or title to a vehicle. Includes a person entitled to use and possess a vehicle subject to a security interest. Excludes a lienholder.
Pedestrian: A person on foot.
Person: An individual, firm, partnership, association or corporation.
Bodily injury: Physical pain, illness, or any impairment of physical condition (Penal Code Sec. 1.07(a)(8)).
Serious bodily injury: Bodily injury that creates a substantial risk of death or that causes death, serious permanent disfigurement, or protracted loss or impairment of the function of any bodily member or organ (Penal Code Sec. 1.07(a)(46)).
Individual: A human being who is alive, including an unborn child at every stage of gestation from fertilization until birth (Penal Code Sec. 1.07(a)(26)).
Public place: Any place to which the public or a substantial group of the public has access, including streets, highways and the common areas of schools, hospitals, apartment houses, office buildings, transport facilities and shops (Penal Code Sec. 1.07(a)(40)).
Death: Includes, for an individual who is an unborn child, the failure to be born alive (Penal Code Sec. 1.07(a)(49)).

Statutes and cases

Transportation Code Sec. 541.001 · Persons
Defines escort flagger, operator, owner, pedestrian, person, school crossing guard and sidewalk user.
Transportation Code Sec. 541.002 · Governmental Authorities
Defines department, director, local authority, police officer and state.
Transportation Code Sec. 541.101 · Metropolitan Area
An area with at least one municipality of at least 100,000 population, plus adjacent municipalities and unincorporated urban districts.
Transportation Code Sec. 541.102 · Restricted Districts
Defines business district, residence district and urban district.
Penal Code Sec. 1.07 · Definitions
Source of bodily injury, serious bodily injury, individual, public place and death.

On the exam Operator is about control, owner is about title. A person sitting behind the wheel with physical control can be the operator without owning anything.

Fill in the blank

An operator is a person who drives or has of a vehicle.
A school crossing guard must be at least years of age.
Under the Penal Code, physical pain, illness, or any impairment of physical condition is called .

LO 22.3

Traffic, traffic areas and traffic control

Traffic is more than cars. Section 541.301 defines it as pedestrians, ridden or herded animals, and conveyances, including vehicles and streetcars, while using a highway for travel.

Learn how the traffic areas nest inside each other. A highway or street is the whole width between the boundary lines of a publicly maintained way, any part of which is open to the public for vehicular travel. The roadway is only the part of the highway that is improved, designed or ordinarily used for vehicular travel, and it does not include the berm or shoulder. An improved shoulder is simply a paved shoulder. A laned roadway has at least two clearly marked lanes.

An intersection is the common area at the junction of two highways, other than the junction of an alley and a highway. A through highway is one on which traffic has preferential right-of-way and entering traffic must yield in compliance with an official traffic-control device. An official traffic-control device is a sign, signal, marking or device that is consistent with the traffic laws, placed by a public body or officer with jurisdiction, and used to regulate, warn or guide traffic.

Alley: A street that is not used primarily for through traffic and that provides access to rear entrances of buildings or lots along a street.
Crosswalk: The part of a roadway marked as a pedestrian crossing, or the part of a roadway at an intersection within the connections of the lateral lines of the sidewalks on opposite sides of the highway.
Freeway: A divided, controlled-access highway for through traffic. A freeway main lane is a freeway lane with an uninterrupted flow of through traffic.
Limited-access or controlled-access highway: A highway to which persons, including abutting owners, have no right of access except at the places and in the manner set by the authority with jurisdiction.
Private road or driveway: A privately owned way used for vehicular travel only by the owner and persons with the owner’s express or implied permission.
Safety zone: An area in a roadway officially designated for exclusive pedestrian use and protected or marked so it is plainly visible.
School crossing zone: A reduced-speed zone designated on a street by a local authority to help children cross safely going to or leaving school, during the time the reduced speed limit applies.
Traffic-control signal: A manual, electric or mechanical device that alternately directs traffic to stop and to proceed.
Railroad sign or signal: A sign, signal or device erected by a railroad, public body or public officer to notify traffic of railroad tracks or an approaching train.

Statutes and cases

Transportation Code Sec. 541.301 · Traffic
Pedestrians, ridden or herded animals, and conveyances, singly or together, while using a highway for travel.
Transportation Code Sec. 541.302 · Traffic Areas
Defines alley, crosswalk, freeway, highway or street, improved shoulder, laned roadway, ramp, roadway, safety zone, school crossing zone, shoulder, sidewalk and related terms.
Transportation Code Sec. 541.303 · Intersection
The common area at the junction of two highways, other than the junction of an alley and a highway.
Transportation Code Sec. 541.304 · Traffic Control
Defines official traffic-control device, railroad sign or signal, and traffic-control signal.
Transportation Code Sec. 542.202(b)(2) · Through Highway
A highway on which traffic has preferential right-of-way and entering traffic must yield in compliance with an official traffic-control device.

On the exam Highway is the whole publicly maintained width. Roadway is only the travelled part, without the shoulder.

Fill in the blank

An improved shoulder is a shoulder.
The junction of an and a highway is not an intersection.
Traffic includes pedestrians, ridden or herded , and conveyances while using a highway for travel.

Practice

Questions on what you just read.

3 questions

Question 1 · LO 22.1
An officer stops a van that the manufacturer designed to carry 12 people, counting the driver. It is being used to carry a church group. Under Section 541.201 the van is a:
Question 2 · LO 22.2
A man is sitting in the driver’s seat of his sister’s car with the engine running and his hands on the wheel. For the traffic laws, he is the vehicle’s:
Question 3 · LO 22.3
A driver is cited for parking “on the roadway.” His car was entirely on the paved shoulder. Under Section 541.302, was the car on the roadway?

0 of 3 answered

For subscribers

The rest of Chapter 22.

35 more objectives

LO 22.4
Miscellaneous terms
3 key terms · 1 authority · 2 fill-in-the-blank
LO 22.5
Littering and illegal dumping
2 statutes and cases · 2 fill-in-the-blank
LO 22.6
Obedience to and effect of the traffic laws
13 statutes and cases · 2 fill-in-the-blank
LO 22.7
Driver’s licenses
26 statutes and cases · 3 fill-in-the-blank
LO 22.8
Signs, signals and markings
9 statutes and cases · 2 fill-in-the-blank
LO 22.9
Chapter 545: driving on the right and passing
12 statutes and cases · 2 fill-in-the-blank
LO 22.10
Chapter 545: turning and signals
7 statutes and cases · 3 fill-in-the-blank
LO 22.11
Chapter 545: right-of-way
7 statutes and cases · 2 fill-in-the-blank
LO 22.12
Chapter 545: railroad crossings and special stops
7 statutes and cases · 2 fill-in-the-blank
LO 22.13
Chapter 545: stopping, standing and parking
5 statutes and cases · 2 fill-in-the-blank
LO 22.14
Chapter 545: speed
4 statutes and cases · 2 fill-in-the-blank
LO 22.15
Chapter 545: miscellaneous rules
10 statutes and cases · 3 fill-in-the-blank
LO 22.16
Operating emergency vehicles
7 statutes and cases · 2 fill-in-the-blank
LO 22.17
Vehicle equipment
12 statutes and cases · 2 fill-in-the-blank
LO 22.18
Bicycles, scooters, golf carts and off-highway vehicles
19 statutes and cases · 2 fill-in-the-blank
LO 22.19
Pedestrians
10 statutes and cases · 2 fill-in-the-blank
LO 22.20
Arrest, notice to appear and promise to appear
10 statutes and cases · 2 fill-in-the-blank
LO 22.21
The Driver Responsibility Program
2 fill-in-the-blank
LO 22.22
Motorcycles and profiling awareness
4 statutes and cases · 2 fill-in-the-blank
LO 22.23
Privileged parking
8 statutes and cases · 2 fill-in-the-blank
LO 22.24
Abandoned motor vehicles
3 statutes and cases · 2 fill-in-the-blank
LO 22.25
Registration and license plates
22 statutes and cases · 2 fill-in-the-blank
LO 22.26
Financial responsibility and vehicle size and weight
16 statutes and cases · 2 fill-in-the-blank
LO 22.27
Warning devices
8 statutes and cases · 2 fill-in-the-blank
LO 22.28
Removing injurious material from the highway
1 authority · 2 fill-in-the-blank
LO 22.29
Implied consent
3 statutes and cases · 2 fill-in-the-blank
LO 22.30
Crash investigation law
15 statutes and cases · 3 fill-in-the-blank
LO 22.31
Responding to and managing the crash scene
3 statutes and cases · 2 fill-in-the-blank
LO 22.32
Interviewing drivers, complainants and witnesses
2 fill-in-the-blank
LO 22.33
Measuring the scene and collecting evidence
2 fill-in-the-blank
LO 22.34
The Texas Peace Officer’s Crash Report
2 fill-in-the-blank
LO 22.35
Putting the crash investigation together
1 fill-in-the-blank
LO 22.36
Traffic Incident Management training
1 fill-in-the-blank
LO 22.37
Authority and priorities for traffic flow
3 statutes and cases · 2 fill-in-the-blank
LO 22.38
Directing traffic: positioning, signals and equipment
5 key terms · 2 fill-in-the-blank

Subscribe to read the rest of this guide.

A subscription opens the other 35 objectives in this chapter, with 72 more fill-in-the-blank items and 7 more practice questions, along with the study guide for every other BPOC chapter.

Unlock the full guide

$10/month (cancel anytime) or $60 one-time (no renewal).

Last checked against the Texas statutes in September 2026. This guide is a study aid for the TCOLE licensing exam. It is not legal advice, and your academy’s instruction and your department’s policy come first.

Key statutes cited

The law that drives the questions.

Tex. Transp. Code 541.202STATUTE

Tex. Transp. Code 541.203STATUTE

Tex. Transp. Code 541.201STATUTE

Tex. Penal Code 1.07STATUTE

Tex. Transp. Code 541.001STATUTE

Tex. Transp. Code 541.002STATUTE

What recruits ask about this chapter.

What should a Texas peace officer understand about traffic laws contained in the Transportation Code (TC) and their applications?

Discuss traffic laws contained in the Transportation Code (TC) and their applications. Includes: authorized Emergency Vehicle; bicycle; bus; farm tractor; house trailer; implement of Husbandry; light Truck; moped.

How does the TCOLE curriculum define following terms in the TC?

Define the following terms in the TC. Includes: persons – Transportation Code Sec. 541.001; escort Flagger; operator; owner; pedestrian; person; school Crossing Guard; sidewalk User.

How does the TCOLE curriculum define following terms in the TC, as it relates to traffic, traffic areas, and traffic control?

Define the following terms in the TC, as it relates to traffic, traffic areas, and traffic control. Includes: traffic – Transportation Code Sec. 541.301; traffic areas – Transportation Code Sec. 541.302; alley; crosswalk; freeway; freeway Main Lane; highway or Street; improved Shoulder.

How does the TCOLE curriculum define various miscellaneous terms listed in Chapter 541, TC?

Define the various miscellaneous terms listed in Chapter 541, TC. Includes: daytime; gross Vehicle Weight.

Same module

Related study guides in Traffic Regulation.

1 more chapters

Ch. 23Intoxicated Driver (SFST)

Ready to drill this?

Drill this chapter with practice questions written from the BPOC curriculum.

You get a curated practice question bank for every BPOC chapter, a daily drill that weights toward the topics you keep missing, and a predicted TCOLE score that moves with your answers.

Get full access →

$10/month (cancel anytime) or $60 one-time (no renewal).

Preparing for the state exam? Read the TCOLE exam guide for the format, passing score, and retake rules, or take a free TCOLE practice test to see where you stand.