This study investigated the opinions of bicyclists/pedestrians regarding how safe from a bicycle traffic injury they felt while on campus. Most earlier studies had been concerned with the taxonomy of bicycle/pedestrian accidents. Because of the paucity of research on attitudes of bicyclists and pedestrians, this research was undertaken. The survey instrument was developed in accordance with recommendations from the Oregon State University Survey & Research Center. It consisted of 19 Likert type, degree of variation statements, and ten biographical questions. The sample consisted of 214 students registered for the winter term of 1986 at Oregon State University. Participants completed the Traffic Safety Attitude Survey and then were placed in the following categories: male, female, bicyclists, and pedestrians. The Survey instrument was designed to test four null hypotheses and to define other broadly held opinions regarding traffic safety on campus. Hypotheses One through Three tested interaction between bicyclists/pedestrians. The fourth hypothesis tested the difference between male bicyclists and male pedestrians and female bicyclists and female pedestrians. The Chi Square Test and a two-way analysis of variance were employed to test the hypotheses. Two significant findings emerged from hypothesis testing: 1) bicyclists and pedestrians differed on the opinion that as much as possible is being done to provide campus bicycle traffic safety, and 2) pedestrians endorsed stricter adherence to bicycle traffic regulations than bicyclists. There was no difference between bicyclists and pedestrians regarding feelings of safety from a bicycle traffic-related injury. Finally, gender had no effect on perceptions of campus bicycle traffic safety. Analysis of the results of this research provided the following conclusions: 1. Male bicyclists felt the least at risk of injury from a bicycle traffic-related injury on campus. 2. Female pedestrians felt the most risk of injury from a bicycle traffic accident on campus. 3. Female bicyclists, female pedestrians, and male pedestrians shared similar opinions regarding risk of exposure to a bicycle traffic accident on campus. 4. Approximately 30% of all subjects felt there is a problem with interaction between bicyclists and pedestrians on the OSU campus. 5. Approximately 46% of the pedestrians and 25% of the bicyclists felt risk of sustaining a bicycle traffic-related injury on campus. 6. Approximately 38% of the pedestrians and 25% of the bicyclists support some form of bicycle traffic restriction. 7. Pedestrians endorse stricter adherance to bicycle traffic regulations that bicyclists do. 8: Pedestrians felt less is being done to ensure bicycle traffic safety on campus than bicyclists did. / Graduation date: 1986

A before-and-after analysis was performed at eleven intersections where a bike box was installed in Portland, Oregon to explore the safety effects of the treatment. Video data were gathered prior to installation at 14 intersections where a bike box installation was planned by the Portland Bureau of Transportation. Cameras were set up to capture three full twenty-four hour days (72 hours) of data for each intersection from Tuesday through Thursday. Of the 14 original selected intersections, 11 intersections actually received the bike box treatment. Video data were again gathered for these intersections after the installation of the bike box for another three full twenty-four hour days (72 hours) between Tuesday and Thursday. One day of data (24 hours) was selected for observation from both the before and after periods in the analysis for each study intersection during midweek. Safety effects were evaluated by three metrics: 1) observed conflicts; 2) observed cyclist behavior for all conflicts as measured by head or shoulder checks; and 3) reported crash data. To develop the conflict data, a log was created of each motor vehicle and bicycle passing through the intersection for approximately 528 hours of video. All conflicts that were observed during the period were further reviewed by an expert panel that scored conflicts by severity. Following this review, a total of 18 conflicts were observed during the before period. The total exposure in the before period was 39,497 motor vehicles in the vehicle lane adjacent to the bike lane (10,454 of which were right-turning) and 7,849 bicycles. A total of 19 conflicts were observed during the after period. Total exposure was 42,381 motor vehicles in the vehicle lane adjacent to the bike lane (11,053 of which were right-turning) and 5,852 bicycles. The sample size of observed conflicts was insufficient to draw statistically significant conclusions for any of the specific intersections that were treated. When taking in account the total amount of conflicts, the limited data suggest a slight increase in the rate of conflicts when normalized against a product of right-turning vehicles and bicycles observed in the intersection. The data also suggest that the installation of a bike box at an intersection reduces the rate of conflicts per hundred motor vehicles and increases the rate of conflicts per hundred bicyclists. Data regarding head-checks from the bicyclist shows an increase in bicyclists observing the possibility of conflicts approaching from behind as they pass through the intersection. A review or crash data at each of the intersections shows an increase at three of the observed intersections and a decrease at the remaining five.